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【单选题】
差动速断保护应按躲过区外三相短路时产生的最大不平衡电流来整定,其保护定值一般为发电机额定电流的()倍。A.
2-5
B.
4-6
C.
4-8
D.
5-12
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皮皮学刷刷变学霸
举一反三
【单选题】(2016课标Ⅰ,27,4分)明初废行省,地方分设三司,分别掌管一地民政与财政、司法、军事,直属六部。明中叶以后,皇帝临时派遣的巡抚逐渐演变为三司之上的地方最高行政长官。这一变化有助于 ( )
A.
扩大地方行政权力
B.
提高地方行政效率
C.
削弱六部的权限
D.
缓解中央与地方的对立
【简答题】二维图形转变为三维模型的方法有哪些?
【单选题】An industrial society, especially one as centralized and concentrated as that of Britain, is heavily dependent on certain essential services: for instance, electricity supply, water, rail and road tra...
A.
To point up the importance of the trade union power.
B.
To outline in brief the great scale of essential services.
C.
To illustrate the danger in the whole economic system.
D.
To bring out a centralized and concentrated industrial society.
【单选题】An industrial society, especially one as centralized and concentrated as that of Britain, is heavily dependent on certain essential services: for instance, electricity supply, water, rail and road tra...
A.
To point up the importance of the trade union power.
B.
To outline in brief the great scale of essential services.
C.
To illustrate the danger in the whole economic system.
D.
To bring out a centralized and concentrated industrial society.
【简答题】摩擦片式离合器是如何切断动力的?
【单选题】An industrial society, especially one as centralized and concentrated as that of Britain, is heavily dependent on certain essential services: for instance, electricity supply, water, rail and road tra...
A.
The economy is very interdependent.
B.
Unions have been established a long time.
C.
There are more unions in Britain than elsewhere.
D.
There are many essential services.
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