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【单选题】
一个正式的工作授权或分配系统,是用于()
A.
对由谁来执行每一件任务进行控制
B.
控制镀金
C.
使管理层了解哪些是已计划的任务
D.
使职能经理了解哪些是已计划的任务
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参考答案:
举一反三
【多选题】直流电动机常用起动方法( )。
A.
电枢回路串电阻起动
B.
降压起动
C.
直接起动
D.
星三角形降压起动
【简答题】He was (honor) ______ as the king of silent films.
【简答题】直流电动机起动时电枢回路串入电阻是为了( )。 A .增加起动转矩 B .限制起动电流 C .增加主磁通 D .减小起动时间
【简答题】阅读理解。 My uncle has a great sports collection. He loves sports very much. And he loves all balls. He likes playing basketball and volleyball.And he likes playing basketball and volleyball. He also like...
【单选题】What would the man love to do?
A.
He loves to look after his cat.
B.
He loves to take care of her cat.
C.
He wouldn't like to do it.
【简答题】为什么他励直流电动机一般不能全压起动?应采用什么起动方法?
【简答题】He loves science fiction in particularly .              __________
【简答题】阅读理解。 My uncle has a great sports collection. He loves sports very much. And he loves all balls. He likes playing basketball and volleyball. He also likes watching balls. How many balls does he ha...
【多选题】直流电动机的起动方法有( )
A.
直接起动
B.
升压起动
C.
降压起动
D.
电枢回路串电阻起动 E 弱磁起动
E.
弱磁起动
【多选题】直流电动机起动的方法有
A.
电枢回路串电阻分级起动
B.
降压起动
C.
调波起动
D.
升压起动
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