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【单选题】
琥珀胆碱的肌松作用机制是:A.
使ACh合成和释放减少
B.
使ACh合成和释放增加
C.
激活胆碱酯酶，使ACh破坏增多
D.
直接与N2-受体结合，引起类似ACh的除极化，使ACh不能兴奋终板
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皮皮学刷刷变学霸
举一反三
【单选题】I insisted he______ back the wallet to the lady, but he insisted he______it.
A.
handed; didn’t steal
B.
hand; hadn’t stolen
C.
hand; not steal
D.
handed; hadn’t stolen
【简答题】含淀粉多的饮片易 （ ）。
【单选题】His father insisted on punishing him, but he insisted he had _______ to do with the matter.
A.
something
B.
a lot
C.
nothing
D.
anything
【单选题】He insisted that his bike ______ stolen and his wife insisted he ______ have to telephone the police. [ ]
A.
has been; would
B.
had; would
C.
was; should
D.
had been; should
【简答题】区分下列每组词的含义有何不同 ( 1 )脂和酯 ( 2 )脂类和类脂 ( 3 )磷酸酯和磷脂酸 ( 4 )混合甘油酯和甘油酯混合物
【简答题】为了实现三相异步电动机的正反转功能,只要将三相电源中的( ),改变旋转磁场的方向,即可改变电动机的转向。A. 4
【单选题】Tom insisted that what he said _____ true, and insisted that he _____ punished.
A.
be; should not be
B.
was; not be
C.
was; was not
D.
should be; not be
【单选题】为了实现三相异步电动机的正反转功能,只要将三相电源中的( ),改变旋转磁场的方向,即可改变电动机的转向。
A.
任意两相对调
B.
三相全部对调
C.
相邻两相对调
D.
任意一相拆下
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