皮皮学，免费搜题
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【单选题】
心迷走神经使自律细胞自律性降低的主要作用机制是A.
动作电位0期去极速度减慢
B.
阈电位水平下移
C.
最大复极电位绝对值增大
D.
4期I k 衰减过程加快
E.
抑制4期I f 内向电流
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】It is selfless ________ the doctor to devote all the time he had ________ for the patients.
A.
for; to care
B.
of; to care
C.
for; to caring
D.
of; to caring
【简答题】结合自己实际谈谈大学生如何在实践中创造有价值的人生。
【单选题】If he had followed the doctor's instruction and ______ in bed to rest, he ______ recovered already.
A.
had laid would
B.
had been lain would
C.
had lain would have
D.
was laid would have been
【简答题】They said they had no choice but ______ (wait) for the doctor to come.
【简答题】Peter King, 15 and Mary King, 13 went to see a doctor together. Peter had a bad cold, so the doctor gave him some pills to take. Mary had a bad cough, so the doctor |gave her some cough medicine. Thes...
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