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【单选题】
UN、IN、ηN、cos N分别是三相异步电动机额定线电压,线电流、效率和功率因数,则三相异步电动机额定功率PN为A.
UNINηNcos N
B.
UNINcos N
C.
UNIN
D.
UNINηN
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举一反三
【单选题】－You mean you have the same _________. －Yes, we both like collecting stamps and taking photos
A.
interests
B.
results
C.
problems
D.
lifestyle
【单选题】—What’s ____ your classroom building? —There are some big trees.
A.
in front of
B.
in the front of
C.
in front
D.
in the front
【单选题】There are some big trees ____ our teaching building.
A.
in the middle of
B.
in the center of
C.
in front of
D.
in the front of
【单选题】—What’s ____ your classroom building? —There are some big trees.
A.
in front
B.
in the front
C.
in front of
D.
in the front of
【单选题】—Are you firmly against any independence move by Taiwan? —Of course. That’s ________ our basic interest lies.
A.
why
B.
when
C.
where
D.
what
【单选题】甲乙两国因某一边境土地的归属常年争执,冲突不断。1993年,甲乙两国达成协议,共同派专家组成一个专门委员会负责处理该争端。该专门委员会经过7年调查取证,最终根据国际法上有关先占、时效等领土主权取得的规则和实践,出具调查报告确定该边境土地应归属于甲国。本案中甲乙两国所采用的争端解决方式称为下列哪一项?
A.
斡旋
B.
调停
C.
调查
D.
和解
【单选题】—What’s ____ your classroom building? —There are some big trees. A. in front B. in the front C. in front of D. in the front of
A.
in front
B.
in the front
C.
in front of
D.
in the front of
【简答题】求序列【图片】的Z变换，并求出对应的零极点和收敛域。
【单选题】Did you find the story___________? [ ]
A.
interesting
B.
being interested
C.
to be interested
D.
is interesting
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