【判断题】【消耗次数：1】
低压断路器是一种重要的控制和保护电器,断路器都装有灭弧装置,因此可以安全地带负荷合、分闸。
①
正确
②
错误
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相关题目
【单选题】
关于油断路器，下列说法中正确的是（）。??
①
只有少油断路器的油仅作为灭弧介质来用??
②
无论是多油断路器，还是少油断路器它们的油都只作为灭弧介质来用?
③
无论是多油断路器，还是少油断路器它们的油不但作为灭弧介质来用，还作为绝缘介质来使用。
④
只有多油断路器的油仅作为灭弧介质来用?
随机题目
【单选题】
5. The rescue team set out for the earth-stricken area _______ the constant aftershocks.
①
in spite
②
despite of
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despite
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but for
【单选题】
12. If you _______materials from other books in your paper, you should mark them out.
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cite
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learn
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borrow
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assure
【单选题】
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in time
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on time
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at times
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by time
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Regardless of
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As regards
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Regarding
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entertain
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. enable
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There has been no rain
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Having no rain
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There having been no rain
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There being no rain
【单选题】
1.The authors purpose of writing
①
To point out the disadvantages of having only one child.
②
To display the disadvantages of having only one child.
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To raise a controversial problem with its probable causes and effects
【单选题】
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①
love
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favor
③
favorite
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favoritism
【单选题】
30.This house will probably come on the ____next month.
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fair
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market
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shop
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store