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【单选题】
低压配电装置中的低压负荷开关，是由带灭弧装置的刀开关与( )串联组合而成，外装封闭式铁壳或开启式胶盖的开关电器。A.
断路器
B.
熔断器
C.
配电屏
D.
刀开关
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举一反三
【单选题】Which of the following statements is NOT TRUE?
A.
Some countries begin to doubt about globalization.
B.
Politicians take advantage of people’s emotion in the USA.
C.
The poor are not taken good care of by American government.
D.
Many Americans don't like the American model of economy.
【简答题】Many politicians are _________ ( 关心 ) with the good of the people.
【简答题】人类基因组计划、“曼哈顿原子计划”和“阿波罗登月计划”并称为20世纪的三大著名计划,中国在()年承担了()的研究任务,即对第()号染色体上()碱基对的测定。
【简答题】3 1. These ancient buildings are not open to the public this month because they are under repair. 2. Fitness is a key/basic/major element in living a happy life, but many people fail to take good care...
【简答题】(1)There are no _________ in the clothes shops at the moment. (2) Most hotels are closed in the ________ . (3) Medical treatment _________ greatly from state to state. (4) I ___________ the g...
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