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【多选题】
重合闸前加速的优点是( )。
A.
能够快速地切除瞬时性故障
B.
可能使瞬时性故障来不及发展成永久性故障,从而提高重合闸的成功率
C.
能保证发电厂和重要变电站的母线电压在0.6~0.7倍额定电压以上,从而保证厂用电和重要用户的电能质量
D.
使用设备少,只需装设一套重合闸装置,简单、经济
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【单选题】破伤风病人,最先受累的肌肉是
A.
面肌
B.
背肌
C.
四肢肌
D.
嚼肌
E.
腹肌
【简答题】一层高密度泡沫材料
【单选题】破伤风病人,最先受累的肌肉是
A.
面肌
B.
背腹肌
C.
四肢肌
D.
嚼肌
E.
以上均不是
【简答题】听下面的材料,回答第1-3题。 1. What do famous artists think of Stephen's drawings? A. They are very strange. B. They are not quite good. C. They are very well drawn. 2. What is the probable relationship between t...
【单选题】如图所示电路中,变阻器R获得最大功率的条件是 ( )
A.
R=3Ω
B.
R=2Ω
C.
R=6Ω
D.
R=9Ω
【多选题】Which of the following is/ are about traditional Man?
A.
emphasizing the importance of males being "sturdy oaks" -- strong, independent, inflexible, emotionless, and often, violent.
B.
The definitions of being a man are not very rigid and clear.
C.
Males can share childcare duties and financial responsibility for their families. They are expected by their families. They are expected by their partners to be open emotionally and to be able to communicate effectively.
D.
Their role stresses both strength and vulnerability -- the ability to be both strong and vulnerable.
E.
working hard, providing for the family, being the "boss", hardly getting emotionally close to anyone, etc. Not showing any vulnerability was central to this role.
【单选题】如图所 示电路中,变阻器 R获得最大功率的条件是( )
A.
R=1.2Ω
B.
R=2Ω
C.
R=3Ω
D.
R=5Ω
【单选题】破伤风病人,最先受累的肌肉是
A.
面肌
B.
背腹肌
C.
四肢肌
D.
嚼肌
E.
吞咽肌
【判断题】破伤风病人,最先受累的肌肉是面肌。?? ??
A.
正确
B.
错误
【单选题】Stratford-on-Avon, as we all know, has only one industry—William Shakespeare—but there are two distinctly separate and increasingly hostile branches. There is the Royal Shakespeare Company (ASC), whic...
A.
the townsfolk deny the RSC's contribution to the town's revenue
B.
the actors of the RSC imitate Shakespeare on and off stage
C.
the two branches of the RSC are not on good terms
D.
the townsfolk earn little from tourism
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