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【单选题】
第二信使cAMP的作用是激活A.
DNA酶
B.
磷酸化酶
C.
腺苷酸环化酶
D.
蛋白激酶
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举一反三
【简答题】气相色谱仪的基本设施包括哪几部分?各有什么作用?
【简答题】气相色谱仪的基本设施包括哪几部分？各有什么作用？
【简答题】简述使触电者脱离高压电源的方法?
【单选题】Questions are based on the following passage． Every human being, no matter what he is doing, gives off body heat．The usual problem is how to dispose of it．But the designers of the Johnstown campus of ...
A.
was difficult to collect
B.
came in a variety of forms
C.
was difficult to get rid of
D.
tended to be absorbed by physical objects
【单选题】The attempt and offer to carry out cloning experiment on human being is blameworthy and can hardly find any ______ among the public not only in our country but also in most of the countries in the wor...
A.
conscience
B.
consensus
C.
sensation
D.
discord
【单选题】患者,李某,放置宫内节育器前,有关副反应和注意事项。下列哪项与放置宫内节育器无关
A.
经量增多
B.
经期延长
C.
腰酸或伴下腹胀痛
D.
体重增加
E.
少许点滴出血
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