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【单选题】
直流发电机电刷顺着电枢旋转方向移动一定角度,电枢反应的性质()A.
具有去磁作用，使得主磁场减弱
B.
具有增磁作用，使得主磁场增强
C.
既不增磁也不去磁
D.
以上说法都不对
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【简答题】ESP系统的英文全称和中文全称是什么?
【简答题】ASR系统的英文全称和中文全称是什么?
【单选题】Which of the following is a fixed percentage of the value of an imported product?
A.
specific tariff
B.
ad valorem tariff
C.
nominal tariff
D.
effective protection tariff
【简答题】RESA的英文全称和中文定义
【简答题】LBS的英文全称 和中文全称 。
【单选题】Which was NOT the member country of the Triple Entente ?
A.
Britain
B.
France
C.
Russia
D.
Italy
【多选题】Which statements of the following are true ones?
A.
Since the spring of 1864, thousands of Chinese laborers had been shanghaied to San Francisco from China to construct the railway in US.
B.
Chinese laborers in US worked harder and faster and they got more pay .
C.
Chinese laborers were more flexible in adapting to any natural or technical adversities .
D.
T he great contributions of over 14,000 Chinese laborers in US have been respected for ages.
【简答题】ICMP的英文全称和中文全称。
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