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问题 单项选择题

Km值与底物亲和力的关系是（）。

A.Km值越小，亲和力越大

B.Km值越大，亲和力越大

C.Km值越小，亲和力越小

D.Km值大小与亲和力无关

E.同一酶对不同底物的Km值是相同的

答案

参考答案：A

判断题

相序表是来校对三相电源相序的仪表。
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选择题

— The Chinese education system rather than the teachers ______ to answer for the overburden

      on the students.

— I agree. I hope the reform being carried out in our country at present will bring about the ______

      results.[      ]

A. are; desired

B. is; desired

C. are desiring

D. is desiring
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