绪论 单元测试
1、判断题：
Generally, gum rosin is produced by chemical processing of woody raw material.
选项：
A:错
B:对
答案: 【错】
第一章 单元测试
1、判断题：
Trace elements are essential to life.
选项：
A:错
B:对
答案: 【对】
2、判断题：
Elements with similar chemical properties generally fall into the same group in the periodic table.
选项：
A:对
B:错
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.
选项：
A:对
B:错
答案: 【对】
4、判断题：
Calcium oxide is an inorganic compounds.
选项：
A:对
B:错
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.
选项：
A:错
B:对
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.
选项：
A:对
B:错
答案: 【对】
7、判断题：
Ethers tend to be reactive, and low molecular mass ethers are often used as solvents.
选项：
A:错
B:对
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.
选项：
A:对
B:错
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.
选项：
A:错
B:对
答案: 【对】
第二章 单元测试
1、判断题：
We can eat or drink in laboratories
选项：
A:错
B:对
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.
选项：
A:对
B:错
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.
选项：
A:错
B:对
答案: 【对】
4、判断题：
There is no need to label glass or flask filled with solution.
选项：
A:对
B:错
答案: 【错】
5、判断题：
If you work with flammable solvent, make sure there is no source of ignition close by.
选项：
A:对
B:错
答案: 【对】
第三章 单元测试
1、判断题：
Fossilised biomass has been exploited as coal and oil.
选项：
A:错
B:对
答案: 【】
2、判断题：
The relative distribution of phenolic nuclei in lignin strongly differs between plant species.
选项：
A:错
B:对
答案: 【】
3、判断题：
The role of hemicellulose is to modify and crosslink the basic fibrils and promote the interaction between other biopolymers.
选项：
A:错
B:对
答案: 【】
4、判断题：
Softwoods are mainly vessel members, fibres, and parenchyma, and hardwoods are mainly made of made of tracheids and parenchyma.
选项：
A:对
B:错
答案: 【】
5、判断题：
The outer layer (S1) is thicker than The middle layer (S2).
选项：
A:对
B:错
答案: 【】
6、判断题：
Klason lignin is a standard analytical method to measure the lignin content of lignocellulosic biomass.
选项：
A:错
B:对
答案: 【
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.
选项：
A:错
B:对
答案: 【】
8、判断题：
Cellulose has many hydroxyl groups which can form hydrogen bonding linked network easily.
选项：
A:错
B:对
答案: 【】
9、判断题：
Highly porous aerogels usually tend to show higher oil-sorption capacities
选项：
A:对
B:错
答案: 【】
10、判断题：
Starch only has one forms, i.e. amylose.
选项：
A:对
B:错
答案: 【】
11、判断题：
In addition to glucomannan, minor amounts of miscellaneous polysaccharides are present in hardwoods.
选项：
A:对
B:错
答案: 【】
12、判断题：
The softening temperature (Ts) of lignins in dry state is higher than that in moist lignins.
选项：
A:对
B:错
答案: 【】
13、判断题：
The reactivity of lignin has nothing to do with its solubility.
选项：
A:错
B:对
答案: 【】
14、判断题：
Lignin mainly has two types of linkages including C-C and C-O-C.
选项：
A:错
B:对
答案: 【】
15、判断题：
The non-bonded orbital interactions (π-π interactions) of the aromatic groups could caused the association of lignin molecules.
选项：
A:对
B:错
答案: 【】
16、判断题：
The aromatic moieties present in the lignin structure will improve the mechanical and thermal properties of epoxy resins.
选项：
A:对
B:错
答案: 【】
17、判断题：
There are two different types of polysaccharide hydrolysis, involving acidic (sulfuric acid) or enzymatic reactions.
选项：
A:错
B:对
答案: 【】
18、判断题：
Terpene is derive from a 5C compound, isoprene.
选项：
A:对
B:错
答案: 【】
19、判断题：
Polyphenols also characteristically possess a significant binding affinity for proteins, which can lead to the formation of soluble and insoluble protein-polyphenol complexes
选项：
A:错
B:对
答案: 【】
20、判断题：
Cardanol double bond may be epoxidised or undergo olefin-metathesis reaction which may act as modified monomer for the formation of different set of polymers.
选项：
A:错
B:对
答案: 【】
第四章 单元测试
1、判断题：
Sodium hydroxide and calcium hydroxide can be used instead of potassium hydroxide to neutralize the acid.
选项：
A:对
B:错
答案: 【】
2、判断题：
Hot air blows into this dryer to bring the sugars humidity level down to 0.05 percent, that standard for table sugar.
选项：
A:对
B:错
答案: 【】
3、判断题：
The main resistance to the flow of heat or mass to a surface lies within the laminar sublayer.
选项：
A:对
B:错
答案: 【】
4、判断题：
Filter cakes are formed late in the fluid flow.
选项：
A:错
B:对
答案: 【】
5、判断题：
Extraction may be used to separate more than two components; and mixtures of solvents, instead of a single solvent, are needed in some applications.
选项：
A:对
B:错
答案: 【】
6、判断题：
Heat fluxes may then be based either on the inside area or the outside area of the choice is arbitrary.
选项：
A:对
B:错
答案: 【】
7、判断题：
Any evaporator that uses pump to ensure higher circulation velocity is called a forced circulation evaporator.
选项：
A:错
B:对
答案: 【】
8、判断题：
If the feed is introduced at one point along the column shell, the column is divided into an upper section, which is often called the stripping section, and a lower section, which is often referred to as the rectifying section.
选项：
A:错
B:对
答案: 【】
9、判断题：
Drying is an absolute term that means a certain value.
选项：
A:错
B:对
答案: 【】
第五章 单元测试
1、判断题：
The traditional techniques of solvent extraction of plant materials are mostly based on the correct choice of solvents and the use of heat or/and agitation to increase the solubility of the desired compounds and improve the mass transfer.
选项：
A:错
B:对
答案: 【】
2、判断题：
They spray the rubber cubes with a mix of calcium carbonate and solvent the mixture forms the film on the cubes that prevents mold and keeps them from sticking together during transport.
选项：
A:对
B:错
答案: 【】
3、判断题：
Biomass is mostly made up of carbon, hydrogen, compounds did not burn called ash.
选项：
A:错
B:对
答案: 【】
4、判断题：
Biochemical approaches include three unit-operations namely, pretreatment, hydrolysis, and distillation.
选项：
A:对
B:错
答案: 【】
5、判断题：
Furfural can be produced by a one-step or a two-step process. The advantage of the one-step process is that a higher quantity of furfural is produced when compared to the two-step process.
选项：
A:错
B:对
答案: 【】
6、判断题：
A worm screw supply the mixture to a press roll, a constant spray of water keeps the mixture from sticking to it.
选项：
A:对
B:错
答案: 【】
7、判断题：
Chemical activation is usually carried out at lower temperatures (from 400 to 700℃) with activating agents like phosphoric acid, potassium hydroxide, sodium hydroxide and zinc chloride.
选项：
A:对
B:错
答案: 【】
8、判断题：
Generally, the cellulosic cell wall from nearly any plant or trees can be used for pulp.
选项：
A:对
B:错
答案: 【】
9、判断题：
When the paper is dry it may be treated with stabilizing materials and surface finishes to improve durability or printability.
选项：
A:对
B:错
答案: 【】
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