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【单选题】
男性,70岁,肝性脑病前期,表现为意识错乱、睡眠障碍、行为失常,3天未排便。该患者行大量不保留灌肠应禁用的灌肠液是:
A.
生理盐水
B.
1:2:3溶液
C.
肥皂水
D.
0.9%氯化钠
E.
油剂
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【单选题】某电路处在短路状态时,外电路电阻震为零,故短路电流在R上压降U()。
A.
等于0
B.
不等于0
C.
等于电源电势
D.
不能确定
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【单选题】The reason he has been such a success is because he never gives up.(改错题)
A.
The reason
B.
such a success
C.
because
D.
gives up
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【单选题】测电路通电后却没有电流,此时电路处于()状态。
A.
导通
B.
短路
C.
断路
D.
电阻等于零
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【单选题】并联谐振电路处于谐雪振状态时,电路中()等于零
A.
阻抗
B.
容抗
C.
感抗
D.
电抗
【单选题】电路通电后却没有电流,此时电路处于( )状态。
A.
导通
B.
短路
C.
断路
D.
电阻等于零
【单选题】谐振电路处于谐状态时,电路中的()等于零
A.
阻抗
B.
容抗
C.
感抗
D.
电抗
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