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【判断题】
受控源不是电路的激励,它的电压或电流受其它电压和电流的控制,并最终受控于独立源,当独立源为零时,受控源也失去了电源的作用。A.
正确
B.
错误
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【简答题】完形填空。 I was sure that I was to be killed. I became terribly nervous. I searched in my pockets to see if there were any cigarettes, which had 1 their search. I found 2 and because of my shaking hands, ...
【单选题】口服避孕药，少数妇女出现类似早孕反应等症状的原因是( )
A.
自主神经功能紊乱
B.
雌激素刺激胃黏膜引起
C.
避孕失败后怀孕的早孕反应
D.
机体对药物的排斥反应
E.
感冒所致
【简答题】I was sure that I was to be killed. I became terribly nervous. I fumbled (searched) in my pockets to see if there were any cigarettes, which 1 their search. I found 2 and because of my shaking...
【单选题】I searched for my wallet and it wasn't thereI thought I______it at home.
A.
left
B.
have left
C.
might have left
D.
could have left
【简答题】完形填空。 I was sure that I was to be killed. I became terribly nervous. I fumbled (searched) in my pockets to see if there were any cigarettes, which 1 their search. I found 2 and because of my shaking h...
【单选题】口服避孕药，少数妇女出现类似早孕反应等症状的原因是（）
A.
自主神经功能紊乱
B.
雌激素刺激胃黏膜引起
C.
避孕失败后怀孕的早孕反应
D.
机体对药物的排斥反应
E.
癫痫
【单选题】下列基础代谢率的叙述哪项是错误的:
A.
正常人基础代谢率是相对稳定的
B.
男子的基础代谢率平均高于女子
C.
基础代谢率相对值的正常范围为±15%
D.
基础代谢率相对值超过±20%时,有可能是病理变化
E.
基础代谢率是机体的最低的代谢水平
【单选题】下列基础代谢率的叙述哪项是错误的?
A.
基础代谢率相对值的正常范围为±10~15%
B.
男子的基础代谢率平均高于女子
C.
正常人基础代谢率是相对稳定的
D.
基础代谢率相对值超过±20%时,才有可能是病理变化
E.
基础代谢率是机体的最低的代谢水平
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