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【单选题】
晶体管时间继电器消耗的功率()电磁式继电器消耗的功率。
A.
小于
B.
等于
C.
大于
D.
远大于
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A.
正确
B.
错误
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A.
正确
B.
错误
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A.
正确
B.
错误
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【单选题】下列哪个不是泌尿系动态显像的正常影像( )
A.
注药后2~3分钟肾影最浓,双肾内放射性均匀分布
B.
后期肾盏肾盂部位放射性增高
C.
20~30分钟肾影基本消退,膀胱影像不清
D.
20~30分钟,用力憋尿及排尿时,输尿管,肾区放射性计数不增加
【多选题】Fill in each of the blanks in the following sentences with a suitable preposition or adverb. (用适当的介词或副词填空) 1. Unfortunately, the hat I had just bought was no longer fashion. 2.  You ought to pay more ...
A.
in
B.
to
C.
about
D.
towards/to
E.
in
F.
for
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【单选题】如上图:20世纪50~70年代,人口大规模迁入东北地区的主要原因是() 1农村剩余劳动力转移 2工业基地建设的需要 3地处边疆,邻国人口迁入 4城市知识青年有计划迁入
A.
①②
B.
③④
C.
①③
D.
②④
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