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【单选题】
（判断题）利用施工图改绘竣工图，必须标明变更修改依据；凡施工图结构、工艺、平面布置等有重大改变，或变更超过图面的1/2的，应当重新绘制竣工图。（ ）A.
正确
B.
错误
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举一反三
【简答题】(以某种结果)告终;(在某一点)结束
【单选题】Binding energy between an enzyme and a substrate contributes to catalysis in which way?
A.
Binding energy provides the enzyme specificity for the substrate.
B.
Binding energy contributions allow for entropy reduction in the substrate-enzyme complex.
C.
Binding energy compensates for energy changes as a result of desolvation of the substrate.
D.
Binding energy contributes to the process of induced fit between the substrate and the enzyme.
E.
All of the answers are correct.
【简答题】______ are composites with tungsten, silica coated with graphite, or carbon filaments as a substrate upon which boron is deposited by a vapor-deposition process (CVD).
【判断题】According to Ce and Swain (1980), communicative competence entails three dimensions.()
A.
正确
B.
错误
【单选题】The most common substrate at intertidal zone is:
A.
Soft substrate
B.
Rocky substrate
C.
Sand substrate
D.
Mud substrate
【单选题】Which statement is TRUE of the binding energy derived from enzyme-substrate interactions?
A.
It cannot provide enough energy to explain the large rate accelerations brought about by enzymes.
B.
It is sometimes used to hold two substrates in the optimal orientation for reaction.
C.
It is the result of covalent bonds formed between enzyme and substrate.
D.
Most of it is derived from covalent bonds between enzyme and substrate.
E.
Most of it is used up simply binding the substrate to the enzyme.
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