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【简答题】
单个十字轴万向节传动的缺点是具有( ),从而传动系受到扭转振动,使用寿命降低。
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参考答案:
举一反三
【单选题】The Expo 2010 Shanghai has not only proved to be a great success but also provided a fantastic model for Milan ____________ managing and organizing events of this scale.
A.
in need of
B.
in terms of
C.
in search of
D.
in favor of
【判断题】实际电流源的内阻越大越好,越大越接近理想电流源。
A.
正确
B.
错误
【单选题】实际电流源的内阻越( )越好
A.
B.
【简答题】Shanghai is not only the largest seaport (港口) city and economic center of China, but also the modern and fashionable international city as well. It lies in the east of China and faces the East China S...
【判断题】实际电流源的内阻越小,其特性越接近理想电流源。
A.
正确
B.
错误
【单选题】实际电流源的内阻越(),就越接近于恒流源.
A.
小;
B.
大;
C.
接近电源内阻。
【判断题】实际电流源的内阻越小越好。
A.
正确
B.
错误
【判断题】实际电流源的内阻越小,性能越好。
A.
正确
B.
错误
【单选题】The Expo 2010 Shanghai has not only proved to be a great success but also provided a fantastic model for Milan ________ managing and organizing events of this scale. [     ]
A.
in need of
B.
in terms of
C.
in search of
D.
in favour of
【简答题】In Shanghai, of 150 elderly women, only ________ have husbands still living. [A] 75 [B] 52 [C] 82 [D] 78
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