2024知到网课 FUNDAMENTALS OF FOREST PRODUCTS CHEMICAL PROCESSING 林产化工专业英语智慧树答案

绪论 单元测试

1、判断题：Generally, gum rosin is produced by chemical processing of woody raw material.
A:错
B:对
正确答案:【错】

第一章 单元测试

1、判断题：Trace elements are essential to life.
A:错
B:对
正确答案:【对】

2、判断题：Elements with similar chemical properties generally fall into the same group in the periodic table.
A:对
B:错
正确答案:【对】

3、判断题：A pure substance always has the same physical and chemical properties and is either an element or a compound.
A:对
B:错
正确答案:【对】

4、判断题：Calcium oxide is an inorganic compounds.
A:对
B:错
正确答案:【对】

5、判断题：Any chemical species capable of binding to electron pairs is called a Lewis acid; any molecule that tends to donate an electron pair is referred to as a Lewis base.
A:错
B:对
正确答案:【对】

6、判断题：In either case, the position of the multiple bond is indicated by numbering from the end of the chain, starting at the end that will assign the lower number to the first carbon atom of the multiple bond.
A:对
B:错
正确答案:【对】

7、判断题：Ethers tend to be reactive, and low molecular mass ethers are often used as solvents.
A:错
B:对
正确答案:【错】

8、判断题：If one or both of the hydrogen atoms on the amide nitrogen atom are replaced by hydrocarbon groups, the structure is named as an N-substituted amide.
A:对
B:错
正确答案:【对】

9、判断题：By doing research in chemistry, we can find new cures for diseases as well as better chemicals to use in our natural environment.
A:错
B:对
正确答案:【对】

第二章 单元测试

1、判断题：We can eat or drink in laboratories
A:错
B:对
正确答案:【错】

2、判断题：If a liquid gets into your eyes, the eye should be washed immediately with clean running water for at least 10min.
A:对
B:错
正确答案:【对】

3、判断题：In the case of fire alarm, we need stop all of your ongoing work, turn off gas and electric devices.
A:错
B:对
正确答案:【对】

4、判断题：There is no need to label glass or flask filled with solution.
A:对
B:错
正确答案:【错】

5、判断题：If you work with flammable solvent, make sure there is no source of ignition close by.
A:对
B:错
正确答案:【对】

第三章 单元测试

1、判断题：Fossilised biomass has  been exploited as coal and oil.
A:错
B:对
正确答案:【对】

2、判断题：The relative distribution of phenolic nuclei in lignin strongly differs between plant species.
A:错
B:对
正确答案:【对】

3、判断题：The role of hemicellulose is to modify and crosslink the basic fibrils and promote the interaction between other biopolymers.
A:错
B:对
正确答案:【对】

4、判断题：Softwoods are mainly vessel members, fibres, and parenchyma, and hardwoods are mainly made of made of tracheids and parenchyma.
A:对
B:错
正确答案:【对】

5、判断题：The outer layer (S1) is thicker than The middle layer (S2).
A:对
B:错
正确答案:【错】

6、判断题：Klason lignin  is a standard analytical method to measure the lignin content of lignocellulosic biomass.
A:错
B:对
正确答案:【对】

7、判断题：For esterification reaction of cellulose, the conversion was low and for silynation reaction, the conversion is good but with a high cost.
A:错
B:对
正确答案:【对】

8、判断题：Cellulose has many hydroxyl groups which can form hydrogen bonding linked network easily.
A:错
B:对
正确答案:【对】

9、判断题：Highly porous aerogels usually tend to show higher oil-sorption capacities
A:对
B:错
正确答案:【对】

10、判断题：Starch only has one forms, i.e. amylose.
A:对
B:错
正确答案:【错】

11、判断题：In addition to glucomannan, minor amounts of miscellaneous polysaccharides are present in hardwoods.
A:对
B:错
正确答案:【错】