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【简答题】
为什么酶反应的酸碱催化主要不是依靠H+和OH-？酶反应中有哪些常见的亲核基团和亲电子基团？酶蛋白中既能作为质子供体又能作为质子受体的最有效又最活泼的催化基团是什么？活性中心是疏水区有何意义？
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反馈参考答案：
举一反三
【单选题】What’s the difference between the technology of Splashpower and that of PowerBeam?
A.
Splashpower lies on the principle of EMI and PowerBeam doesn’t.
B.
Splashpower uses coils to cause EMI and PowerBeam uses lasers.
C.
Splashpower went bankrupt and PowerBeam grows prosperous.
D.
PowerBeam uses a special charging pad and Splashpower doesn’t.
【多选题】What’s the meaning of travel ?
A.
To escape from a dull lifestyle
B.
To expand one’s horizons
C.
To learn about the special flavor of a certain culture
D.
To expect a miracle in life
【简答题】从历史上看,社会革命的基本形式是
【单选题】— What’s the news in today’s newspaper? —______ special. Let’s go out for a walk. A. Nothing B. Something C. Anything D. Everything
A.
Nothing
B.
Something
C.
Anything
D.
Everything
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