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【单选题】
低压断路器即低压自动开关它相当于组合了( )A.
刀开关、熔断器、热继电器、操作手柄
B.
刀开关、熔断器、热继电器、启动器
C.
刀开关、熔断器、热继电器、压力继电器
D.
刀开关、熔断器、热继电器、欠压继电器
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举一反三
【单选题】Some people say that the best way to reduce the body's mid-section is to do stomach exercise. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are ...
A.
should exercise all the muscles of your body
B.
should exercise that specific part of your body
C.
should do stomach exercises
D.
can do any kind of exercise
【简答题】低压电器的“低压”通常是指工作在直流______或交流______以下的用电器。
【单选题】 Let’s do some reading, ________?
A.
shall you
B.
shall we
C.
shan’t you
D.
will you
【简答题】Let’s do some
exercise now, _______?
【单选题】Let’s help the old lady do some cleaning, ?
A.
do you
B.
will you
C.
can we
D.
shall we
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