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【单选题】
酶保持催化活性,必须A.
酶分子完整无缺
B.
有酶分子上所有化学基团存
C.
有金属离子参加
D.
有辅酶参加
E.
有活性中心及其必需基团
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【简答题】What is materials science? What is materials engineering?
【单选题】工程建设监理投资控制是指在整个项目的()阶段开展管理活动，力求使项目在满足质量和进度要求的前提下，实现项目实际投资不超过计划投资。
A.
计划和规划阶段
B.
实施阶段
C.
组织阶段
D.
验收阶段
【单选题】We are engaged in the interdisciplinary field of the science and technology of materials.
A.
take up
B.
busy with
C.
interested in
D.
take in
【多选题】The term materials science and engineering combine both _______ and ________.
A.
materials science
B.
materials engineering
C.
materials technology
D.
materials processing
【多选题】The term materials science and engineering combine both _______ and ________
A.
Materials science
B.
Materials engineering
C.
Materials technology
D.
Materials processing
【判断题】The discipline of materials science and engineering can be subdivided into materials science and materials engineering subdisciplines.
A.
正确
B.
错误
【单选题】Modem technology and science have produced a wealth of new materials and new ways of using old materials. For the artist this means wider opportunities. There is no doubt that the limitations of mater...
A.
can cause a lot of changes in sculpture arts
B.
permit details of an object to be seen clearly
C.
can superimpose multiple sides of sculptor's designs
D.
can make artists adaptable to be surroundings
【单选题】Modern technology and science have produced a wealth of new materials and new ways of using old materials. For the artist this means wider opportunities. There is no doubt that the limitations of mate...
A.
artistic creations seem to be the reproductions of modern technology
B.
artistic creations have made great strides scientifically
C.
artistic creations appear to be incapable of ignoring material advances
D.
artistic creations are the reflection of the material world
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