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【简答题】
变压器铁心是变压器的主磁路,又作为绕组的支撑骨架。为了减少铁心内 的 损耗和 损耗,通常采用含硅量为5%、厚度为0.35mm或0.5mm、两平面涂绝缘漆或经氧化膜处理的 叠装而成。按绕组套入铁心的形式,变压器分为 和 两种。
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举一反三
【单选题】It’s desired especially this year that this rule _______be brought to the attention of all the teachers.
A.
should
B.
would
C.
might
D.
could
【判断题】If the data set is approximately bell-shaped, the empirical rule will more accurately reflect the greater concentration of data close to the mean as compared to the Chebyshev rule.
A.
正确
B.
错误
【单选题】急救医疗服务体系指的是
A.
emergency medicine
B.
nursing in emergency
C.
pre-hospital emergency medicine care
D.
emergency medical service system
E.
department of emergency
【单选题】Which rule is of least importance in Vermeer’s (1970) skopos theory?
A.
Skopos rule
B.
Coherence rule
C.
Fidelity rule
D.
Cohesive rule
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