城乡建设部、公安部修订《看守所建设标准》主要原因。（）
A. 看守所建设理念发生变化
B. 看守所勤务模式改革需要
C. 看守所功能用房不能满足工作需要
D. 武警等相关部门要求
查看答案
The main difference between a motor control circuit containing low voltage protection and low voltage release is that the latter contains （）.
A. a magnetic operating coil
B. normally open line contacts
C. thermal-overload protection
D. a momentary-contact start butto
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