第一章 单元测试
1、单选题：Attention is called to the fact that in many cases pipelines are not ______ and charted depths may be decreased by up to 2 meters.
A:D. built
B:B. buried
C:C. existed
D:A. concealed
正确答案:【B. buried】
2、单选题：Depths of {wk.} are to be inserted in the chart.
A:D. weak
B:A. work
C:C. wake
D:B. wreck
正确答案:【B. wreck】
3、单选题：For full information regarding the current circulation of the Indian Ocean, ______ Sailing Direction, Current Atlas, etc.
A:C. see
B:A. watch
C:B. look for
D:D. regard
正确答案:【C. see】
4、单选题：In Admiralty Sailing Directions, STRIPES is the word used to indicate ______ marking.
A:C. diagonal
B:D. vertical or diagonal
C:B. vertical
D:A. horizontal
正确答案:【D. vertical or diagonal】
5、单选题：In the Uniform Cardinal System of Buoyage, a buoy in the eastern quadrant from a danger could ______.
A:D. be any of the above
B:C. have a black top mark
C:B. be black and white vertically striped
D:A. be black and white horizontally striped
正确答案:【C. have a black top mark 】
6、单选题：The lateral system is used in ____.
A:C. open waters such as shoals, reefs or wrecks
B:B. restricted waters such as buoyed channels
C:D. open water such as buoyed channels
D:A. restricted waters such as shoals, reefs or wrecks
正确答案:【B. restricted waters such as buoyed channels】
7、单选题：What would be the color of an IALA starboard hand lateral buoy, as seen when sailing toward land, in Europe?
A:B. Red
B:C. Red and green stripes
C:A. Green
D:D. Black and yellow stripes
正确答案:【A. Green】
8、单选题：When reversing, the tidal stream will have a period with little or no effect. This is call the_____.
A:C. slack
B:B. range
C:D. spring
D:A. rise
正确答案:【C. slack】
9、单选题：The average time between two high waters is 12 hours and 25 minutes because this is the time it takes for ______.
A:D. The sun and the moon to be on the same side
B:C. The moon to be at its apogee
C:A. The sun to be at the opposite side of the moon
D:B. The moon to be at the opposite side of the earth
正确答案:【B. The moon to be at the opposite side of the earth】
10、单选题：What is the tidal height?
A:B. The range of the tide
B:D. The height above or under the Mean Level
C:C. The water above the Lowest Astronomical Tide
D:A. Twice the tide amplitude
正确答案:【C. The water above the Lowest Astronomical Tide】
11、单选题：Data relating to the direction and velocity of rotary tidal currents can be found in the ______
A:B. Tidal Current Tables
B:D. Tide Table
C:C. Nautical Almanac
D:A. Mariners Guide
正确答案:【B. Tidal Current Tables】
12、单选题：From ______ the mariner can know the data of tide.
A:D. the port list
B:C. the tide table
C:A. the sea pilot
D:B. the cargo plan
正确答案:【C. the tide table】
13、单选题：Which is a weekly publication advising mariners of important matters affecting navigational Safety ?
A:B. Notice to Mariners
B:D. Sailing Directions
C:A. Light List
D:C. Coast Pilot
正确答案:【B. Notice to Mariners】
14、单选题：In which source could you find the number of a chart for a certain geographic area?
A:A. Chart No.1
B:B. Catalog of Charts
C:D. IMO Light List
D:C. IMO Practical Navigator
正确答案:【B. Catalog of Charts】
15、单选题：All of the following information concerning lighted aids to navigation may be read directly from the light list except the ______
A:A. location
B:D. light characteristics
C:B. height of light above water
D:C. luminous range
正确答案:【C. luminous range】
16、单选题：The arrangement of charts in the catalogue is _________.
A:B. on a national basis
B:D. appeared from A to W
C:C. shown orderly
D:A. on a regional basis
正确答案:【A. on a regional basis】
17、单选题：The datum from which the predicted heights of tides are reckoned in the tide table is _____.
A:B. the same as that used for the charts of the locality
B:C. the highest possible level
C:A. mean low water
D:D. given in table three of the tide tables
正确答案:【B. the same as that used for the charts of the locality】
18、单选题：Many of the soundings shown on the chart are derived from ______ , Undue reliance should not be placed upon them.
A:B. correct and often very good surveys
B:C. inadequate and often very old surveys
C:D. adequate and present surveys
D:A. complete and often very poor surveys
正确答案:【C. inadequate and often very old surveys】
19、单选题：Lines on a chart which connect points of equal magnetic variation are called ______.
A:B. magnetic declinations
B:A. magnetic latitudes
C:C. dip
D:D. isogonic lines
正确答案:【D. isogonic lines】
20、单选题：How is the annual rate of change for magnetic variation shown on a pilot chart?
A:A. Gray lines on the uppermost inset chart
B:C. In parenthesis on the lines of equal magnetic variation
C:D. Annual rate of change is not shown
D:B. Red lines on the main body of the chart
正确答案:【A. Gray lines on the uppermost inset chart】
第二章 单元测试
1、单选题：The correct method of switching off a marine radar is to turn power switch to ____ position first, then to ______ position.
A:D.close / standby
B:C.standby / close
C:A.off / standby
D:B.standby / off
正确答案:【B.standby / off】
2、单选题：The abbreviation PPI in the Sperry Collision Avoidance System means ______.
A:C.plane position indication
B:D.policy proof of interest
C:B.plain position indicator
D:A.plan position indicator
正确答案:【A.plan position indicator】
3、单选题：Radar makes it possible and much safer for us to sail __.
A:D.in rivers
B:A.in dense fog
C:C.in the open sea
D:B.in boisterous weather
正确答案:【A.in dense fog】
4、单选题：The 10-cm radar as compared to a 3-cm radar of similar specifications will ______.
A:D.have more sea return during rough sea conditions
B:A.be more suitable for river and harbor navigation
C:C.have a wider horizontal beam width
D:B.provide better range performance on low lying targets during good weather and calm seas
正确答案:【C.have a wider horizontal beam width】
5、单选题：The ARPA may swap targets when automatically tracking if two targets ______
A:C.are tracked on the same bearing
B:A.are tracked on reciprocal bearings
C:D.pass close together
D:B.are tracked at the same range
正确答案:【D.pass close together】
6、单选题：The common way to obtain your ship’s position is ______.
A:A.keeping a close watch and lookout
B:D.keeping a well clear
C:B.taking a radar range and bearing
D:C.observing a radar target and listening to signals
正确答案:【B.taking a radar range and bearing】
7、单选题：The radio waves used for radar are very short，only______long．
A:C.a few meters
B:A.a few centimeters
C:D.a few feet
D:B.a few fathoms
正确答案:【A.a few centimeters】
8、单选题：When hitting a solid object such as a ship or an airplane, the radar waves are reflected back______ they came.
A:C.by the way
B:D.through the path
C:A.in the way
D:B.the way
正确答案:【D.through the path】
9、单选题：When using a radar in a unstabilized mode, fixes are determined most easily from ______.
A:C.ranges
B:B.tangent bearings
C:D.objects that are close aboard
D:A.center bearings
正确答案:【C.ranges】
10、单选题：Which general statement concerning radar is FALSE?
A:C.radar bearing are less accurate than radar range
B:B.the ability of radar to detect objects is unaffected by weather conditions
C:D.radar should be checked regularly during clear weather to ensure that it is operating properly
D:A.raising the antenna height increases the radar range
正确答案:【B.the ability of radar to detect objects is unaffected by weather conditions】
第三章 单元测试
1、单选题：A boundary between two air masses is a (n) ______.
A:C. front
B:D. continent
C:B. isobar
D:A. lapse rate
正确答案:【C. front】
2、单选题：A cloud of marked vertical development (often anvil-shaped) would be classified as ______.
A:D. Cumulonimbus
B:B. cirrocumulus
C:C. altocumulus
D:A. cirrus
正确答案:【D. Cumulonimbus】
3、单选题：A cyclone in its final stage of development is called a(n) ______.
A:B. anticyclone
B:C. occluded cyclone or occluded front
C:D. polar cyclone
D:A. tornado
正确答案:【C. occluded cyclone or occluded front】
4、单选题：A hygrometer is device used for determining ______.
A:D. relative humidity
B:B. atmospheric pressure
C:C. wind velocity
D:A. the absolute temperature
正确答案:【D. relative humidity】
5、单选题：Advection fog is most commonly caused by ______.
A:C. a rapid cooling of the air near the surface of the Earth at night
B:D. warm moist air being blown over a colder surface
C:B. saturation of cold air by rain
D:A. air being warmed above the dew point
正确答案:【D. warm moist air being blown over a colder surface】
6、单选题：An occluded front is caused by a(n) ______.
A:C. cold front overtaking a warm front
B:D. warm front dissipating
C:A. cold front becoming stationary
D:B. warm front becoming stationary
正确答案:【C. cold front overtaking a warm front】
7、单选题：Clouds appearing in the following order: cirrus, cirrostratus, altostratus, stratus, and nimbostratus usually indicate the approach of a(n) ______.
A:B. occluded front
B:D. cold front
C:A. warm front
D:C. medium front
正确答案:【A. warm front】
8、单选题：Pressure gradient is a measure of ______.
A:A. a high-pressure area
B:D. vertical pressure variation
C:B. pressure difference over horizontal distance
D:C. pressure difference over time
正确答案:【B. pressure difference over horizontal distance】
9、单选题：The atmosphere in the vicinity of a high pressure areas is called a (n) _____.
A:D. cyclone
B:C. occluded front
C:B. cold front
D:A. anticyclone
正确答案:【A. anticyclone】
10、单选题：A generally circular low pressure area is called a (n) ______.
A:B. anticyclone
B:A. cyclone
C:D. occluded front
D:C. cold front
正确答案:【A. cyclone】
11、单选题：The legend/symbol which designates an occluded front is represented by a _______.
A:B. Purple line
B:D. dashed blue line
C:A. red line
D:C. blue line
正确答案:【B. Purple line】
12、单选题：A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables, you can determine the ___
A:C. relative humidity and dew point
B:D. wind chill factor
C:B. wind speed
D:A. atmospheric pressure
正确答案:【C. relative humidity and dew point】
13、单选题：A sea breeze is a wind ______.
A:A. that blows towards the sea at night
B:D. caused by the distant approach of a hurricane
C:B. that blows towards an island during the day
D:C. caused by cold air descending a coastal incline
正确答案:【B. that blows towards an island during the day】
14、单选题：When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as______．
A:A. Hurricane
B:B．Breeze
C:D．Gale
D:C．Storm
正确答案:【C．Storm】
15、单选题：Anticyclones are usually characterized by ______.
A:D. overcast skies
B:A. dry, fair weather
C:B. high winds and cloudiness
D:C. gustiness and continuous precipitation
正确答案:【A. dry, fair weather
】
16、单选题：Altocumulus clouds are defined as ________.
A:C. low clouds
B:B. middle clouds
C:A. high clouds
D:D. vertical development clouds
正确答案:【B. middle clouds】
17、单选题：One of the factors which affects the circulation of ocean currents is ___
A:C. vessel traffic
B:D.. the jet stream
C:A. humidity
D:B. varying densities of water
正确答案:【B. varying densities of water】
18、单选题：Ocean currents are well defined and __.
A:A. create large waves in the direction of the current
B:D. are characterized by a light green color
C:B. change direction on 3600 during a 24 hour period
D:C. remain fairly constant in direction and velocity through out the year
正确答案:【C. remain fairly constant in direction and velocity through out the year】
19、单选题：A sling psychrometer is a(n) ______.
A:B. instrument used in celestial navigation
B:D. instrument used to measure specific gravity
C:A. type of cargo gear
D:C. instrument used to measure relative humidity
正确答案:【C. instrument used to measure relative humidity】
第四章 单元测试
1、单选题：You should conduct a sector search under which of the following circumstances?
A:B.More than one vessel is available for a search
B:C.The search object is a target that will be readily detected by radar
C:D.AN aircraft is available to assist a surface vessel
D:A.The search target is sighted and then lost
正确答案:【A.The search target is sighted and then lost】
2、单选题：A race track turn would be better than a Williamson turn in recovering a man overboard if .
A:D.the wind was from astern on the original course
B:A.the man has been missing for a period of time
C:B.the sea water is very cold and the man is visible
D:C.there is thick fog
正确答案:【B.the sea water is very cold and the man is visible】
3、单选题：A twin-screw vessel can clear the inboard propeller and maneuver off a pier best by holding a(n) .
A:D.forward spring line and going slow ahead on the outboard engine
B:C.forward spring line and going slow ahead on both engines
C:B.after spring line and going slow astern on the outboard engine
D:A.forward spring line and going slow ahead on the inboard engine
正确答案:【D.forward spring line and going slow ahead on the outboard engine】
4、单选题：You may BEST turn a twin-screw vessel about，to the right，in a narrow channel by using _.
A:B.one engine only
B:C.port engine ahead and the starboard engine astern
C:A.both engines ahead and helm
D:D.both engines astern and use helm
正确答案:【C.port engine ahead and the starboard engine astern】
5、单选题：A vessel fitted with twin screws is easier in ______ than a vessel with single screw．
A:A.turning maneuver
B:B.course setting
C:C.position fixing
D:D.regulating speed
正确答案:【A.turning maneuver】
6、单选题：Your ship is dead in the water with the rudder amidships. As the right-handed screw starts to turn ahead，the bow will tend to go ________.
A:D.as influenced by the tide and sea
B:B.to port
C:A.to starboard
D:C.straight ahead
正确答案:【B.to port】
7、单选题：A vessel travelling down a narrow channel, especially if the draft is nearly equal to the depth of water, may set off the nearer side. This effect is known as .
A:A.smelling the bottom
B:C.bank suction
C:B.squatting
D:D.bank cushion
正确答案:【D.bank cushion】
8、单选题：A single-screw vessel going ahead tends to turn more rapidly to port because of propeller____.
A:C.sidewise(横斜的)force
B:B.suction current
C:D.thrust
D:A.discharge course
正确答案:【C.sidewise(横斜的)force】
9、单选题：In a following sea, a wave has overtake your vessel and thrown the stern to starboard .to continue along your original course, you should___
A:D.decrease speed
B:C.increase speed
C:A. more right rudder
D:B.use more left rudder
正确答案:【A. more right rudder】
10、单选题：In ballasting to survival draft .while in transit, due to extreme wind and wave loads, thrusters or propulsion, if available, should be used to___
A:B.maintain vessel heading
B:C.maximize accelerations
C:D.increase speed of advance
D:A.reduce windward mooring tensions
正确答案:【B.maintain vessel heading】
11、单选题：The side of a ship which is farther from the wind is ______
A:A.fairway side
B:B.open sea side
C:D.roadstead side
D:C.lee side
正确答案:【C.lee side】
12、单选题：The key factors to consider when approaching a casualty vessel or survivors are ________1.If a lee side protection is require。2. The rate of drift of the casualty vessel or survivors. 3. The rate of drift of the rescue vessel.
A:A.1 and 2 only
B:D.1,2 and 3
C:B.2 and 3 only
D:C.1 and 3 only
正确答案:【D.1,2 and 3】
13、单选题：If you must enter water on which there is an oil fire, you should ______.
A:D. wear very light clothing
B:B. enter the water on the windward side of the vessel
C:A. protect your life preserver by holding it above your head
D:C. keep both hands in front of your face to break the water surface when diving head first
正确答案:【B. enter the water on the windward side of the vessel】
14、单选题：THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is ______.
A:A. Ground speed
B:C. Relative speed
C:D. Speed of the vessel
D:B. Boarding speed
正确答案:【B. Boarding speed】
15、单选题：A vessel is equipped with twin propellers，both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships，what will happen?
A:C. The vessel will steer a zigzag course.
B:A. The bow will swing to starboar
C:B. The bow will swing to port.
D:D. The vessel will steer a fairly straight course.
正确答案:【D. The vessel will steer a fairly straight course.】
16、单选题：It is easier to dock a right hand , single screw vessel ____.
A:B. either side to the wharf
B:C. port side to the wharf
C:D. stern to the wharf
D:A. starboard side to the wharf
正确答案:【C. port side to the wharf】
17、单选题：Current refers to the ______.
A:D. None of the above
B:B. horizontal movement of the water
C:C. density changes in the water
D:A. vertical movement of the water
正确答案:【B. horizontal movement of the water】
18、单选题：Which standard man overboard manoeuvre is considered the best during bad visibility conditions?
A:B. The single turn
B:C. The one turn
C:D. The Williamson turn
D:A. The Anderson turn
正确答案:【D. The Williamson turn】
19、单选题：One major advantage of the round turn maneuver in an man overboard situation is that it ____.
A:C. requires the least ship handling skills to perform
B:A. is the fastest method
C:B. is easy for a single screw vessel to perform
D:D. can be used in reduced visibility
正确答案:【A. is the fastest method】
20、单选题：The distance that a vessel travels from the time that the order to put engines full astern until the vessel is dead in the water is known as ____
A:B. head reach
B:A. advance
C:D. transfer
D:C. surge
正确答案:【B. head reach】
第五章 单元测试
1、单选题：Vessel shall normally join or leave a traffic lane ______ of the lane.
A:C. at the termination
B:A. from right side
C:D. from either side
D:B. from left side
正确答案:【C. at the termination】
2、单选题：The rules state that vessels may depart from the requirements of the Rules when______．
A:D．necessary to avoid immediate danger
B:B．operating in a narrow channel
C:C．the Master enters it in the ship’s log
D:A．there are no other vessels around
正确答案:【D．necessary to avoid immediate danger】
3、单选题：Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is of your port bow on a steady bearing. Which statement is true concerning this situation ?
A:B. The container vessel is the stand-on as it is the larger vessel
B:D. None of the above
C:C. You are not to impede the safe passage of the container vessel in the channel
D:A. You should maintain course and speed
正确答案:【C. You are not to impede the safe passage of the container vessel in the channel】
4、单选题：Systems of inbound and outbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as ______
A:C. collision avoidance fairways
B:A. merchant vessel reporting systems
C:D. restricted maneuverability channels
D:B. traffic separation schemes
正确答案:【B. traffic separation schemes】
5、单选题：When action to avoid a close quarters situation is taken, a course change alone may be the most effective action provided that ______.
A:D. the course change is to starboard
B:B. it is not done too early
C:A. it is done in a succession of small course changes
D:C. it is a large course change
正确答案:【C. it is a large course change】
6、单选题：When navigating in thick fog with the radar on，you should______．
A:C．station a lookout as low down and far forward as possible
B:D．keep the radar on the shortest available range for early detection of approaching vessels
C:B．secure the sounding of fog signals until a vessel closes within five miles
D:A．station the lookout in the wheelhouse to keep a continuous watch on the radar
正确答案:【C．station a lookout as low down and far forward as possible】
7、单选题：While underway your vessel approaches a bend in a river where, due to the bank, you cannot see around the bend. You should ______
A:B. sound the danger signal
B:C. sound one prolonged blast
C:A. keep to the starboard side of the channel and sound one short blast
D:D. slow your vessel to bare steerageway
正确答案:【C. sound one prolonged blast】
8、单选题：Every vessel should at all times proceed at a safe spee
D. Safe speed is defined as that speed where ______.
A:A. you can stop within your visibility range
B:D. no wake comes from your vessel
C:B. you can take proper and effective action to avoid collision
D:C. you are traveling slower than surrounding vessels
正确答案:【B. you can take proper and effective action to avoid collision】
9、单选题：Risk of collision may exist ______.
A:B. even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
B:C. if you observe both sidelights of a vessel ahead for an extended period of time
C:D. All of the above
D:A. if the compass bearing of an approaching vessel does NOT appreciably change
正确答案:【D. All of the above】
10、单选题：In a traffic separation scheme, when joining a traffic lane from the side, a vessel shall do so_
A:D. only to anchor within the zone
B:C. at as small an angle as possible
C:B. as nearly as practical at right angles to the general direction of traffic flow
D:A. only in case of an emergency or to engage in fishing within the zone
正确答案:【C. at as small an angle as possible】
11、单选题：Every vessel that is to keep out of the way of another vessel must take positive early action to comply with this obligation and must ______.
A:C. sound one prolonged blast to indicate compliance
B:A. avoid crossing ahead of the other vessel
C:D. alter course to port for a vessel on her port side
D:B. avoid passing astern of the other vessel
正确答案:【A. avoid crossing ahead of the other vessel】
12、单选题：Your vessel is crossing a narrow channel. A vessel to port is within the channel and crossing your course. She is showing a black cylinder. What is your responsibility?
A:B. Sound the danger signal.
B:A. Hold your course and spee
C:D. Do not cross the channel if you might impede the other vessel.
D:C. Begin an exchange of passing signals.
正确答案:【D. Do not cross the channel if you might impede the other vessel.】
13、单选题：The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within ______.
A:A. the distance of visibility
B:C. a distance appropriate to the existing circumstances and conditions
C:B. 1/2 the distance of visibility
D:D. the distance that it would require for the propeller to go from full ahead to full astern
正确答案:【C. a distance appropriate to the existing circumstances and conditions】
14、单选题：By radar alone, you detect a vessel ahead on a collision course, about 3 miles distant. Your
radar plot shows this to be a meeting situation. You should ______.
A:C. maintain course and speed and sound the danger signal
B:D. maintain course and speed and sound no signal
C:A. turn to port
D:B. turn to starboard
正确答案:【B. turn to starboard】
15、单选题：A power—driven vessel operating in a narrow channel with a following current, on the Western Rivers, is meeting an up bound vessel. Which statement is TRUE?
A:B. the down bound vessel must initiate the required maneuvering signals
B:A. the down bound vessel has the right-of-way
C:C. the down bound vessel must propose the manner and place of passage
D:D. all of the above
正确答案:【D. all of the above】
16、单选题：Which of the following statement is correct regarding ship handling when in the vicinity of traffic separation schemes？ (1)A vessel shall，so far as practicable，avoid crossing traffic lanes (2)If obliged to cross traffic lanes，she shall do so as nearly as practicable at right angles to the general direction of traffic flow．
A:C．Both(1) and (2)
B:B．(2) only
C:A．(1) only
D:D．Neither (1) nor (2)
正确答案:【C．Both(1) and (2)】
17、单选题：Which statement is TRUE concerning risk of collision?
A:B. proper use shall be made of radar equipment to determine risk of collision
B:A. risk of collision never exists if the compass bearing of the other vessel is changing
C:D. risk of collision exists if the vessels will pass within half a mile of each other
D:C. risk of collision must be determined before any action can be taken by a vessel
正确答案:【B. proper use shall be made of radar equipment to determine risk of collision】
18、单选题：A sailing vessel is proceeding along a narrow channel and can safely navigate ONLY inside the channel. The sailing vessel approaches a vessel engaged in fishing in the narrow channel. Which statement is TRUE?
A:A. Each vessel should move to the edge of the channel on her port side
B:C.The fishing vessel is directed not to impede the passage of the sailing vessel
C:B.The vessels are required to exchange signals
D:D.Each vessel should be displaying signals for a vessel constrained by her draft
正确答案:【C.The fishing vessel is directed not to impede the passage of the sailing vessel】
19、单选题：In determining a safe speed ______ shall be taken into your consideration.
A:B. the traffic density
B:C. the presence of the background light at night
C:D. A+B+C
D:A. the state of wind, sea and current
正确答案:【D. A+B+C】
20、单选题：A traffic separation zone is that part of a traffic separation scheme which ______.
A:D. separates traffic proceeding in one direction from traffic proceeding in the opposite direction
B:A. is between the scheme and the nearest land
C:C. is designated as an anchorage area
D:B. contains all the traffic moving in one direction
正确答案:【D. separates traffic proceeding in one direction from traffic proceeding in the opposite direction】
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