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【判断题】
当需要同时采用串联和并联晶闸管时,通常采用先串联后并联的方法。()A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】世界上公认的第一台电子数字计算机诞生在
【简答题】柴油机的燃烧过程分成哪几个阶段?它们的特点是什么?
【简答题】课程目标从四分方面,即知识技能、( )、( )、( )。
【简答题】柴油机的燃烧过程分成哪几个阶段?它们的特点是什么? {
【单选题】Jean did not have time to go to the concert last night because she was busy for her examination______.
A.
to prepare
B.
preparing
C.
to be prepared
D.
being prepared
【单选题】My parents expected too much of me. When they heard that I had failed in the college entrance examination, they almost ____. [ ]
A.
broke up
B.
broke off
C.
broke out
D.
broke down
【单选题】It is essential that he_____all the facts first.(2014)
A.
is examining
B.
will examine
C.
examines
D.
examine
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