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【单选题】
下列分子中，属于极性键构成的非极性分子的是A.
H2S
B.
NH3
C.
CO2
D.
N2
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【简答题】Eleza tofauti kati ya Fasihi Simulizi na Fasihi Andishi.
【单选题】The field coils _____and the armature _____. This is in fact the arrangement adopted for large, heavy duty alternators.
A.
are stationary / rotates
B.
are stationary /is stationary
C.
rotate / is stationary
D.
rotate / rotates
【简答题】Kati: Szilvia?Szilvia: ___________________________ Kati: Hi. I'm phoning about our visitors from Stockholm. I'm afraid they've changed their plans.Szilvia: ___________________________ Kati: Yes,...
【简答题】需求分析的目的是_______ A制定项目的工作计划 B确保单站工作正常 C获取项目的具体需求 D定位、解决网络中存在的问
【单选题】The field coils are connected in series or parallel with the armature winding.
A.
励磁线圈与电枢绕组串联或并联连接。
B.
励磁线圈与电枢绕组被串联或并联连接。
C.
励磁线圈被与电枢绕组被串联或并联连接。
D.
通过串联或并联，励磁线圈被连接。
【单选题】The field coils ______ and the armature(电枢) ______. This is in fact the arrangement adopted for large, heavy duty alternators.
A.
are stationary(固定的)/rotates
B.
are stationary/is stationary
C.
rotate/ is stationary
D.
rotate/rotate
【单选题】The field coils____and the armature is____. This is in fact the arrangement adopted for
A.
rge, heavy duty alternators.
B.
stationary; rotate
C.
stationary; stationary
D.
rotate; stationary
E.
rotate; rotate
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