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【判断题】
在冷起动时,由于发动机转速低,因此不需要浓混合气。( ) A. √ B. ×A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】电力系统发生短路故障 , 会引起发电 机的机端电压剧烈下 降 , 此时自动装置迅速将发 电 机励磁电流增至最大值 , 称为 。
【单选题】Placement of a story on page one or page twenty-four will control its ______.
A.
accuracy
B.
impartiality
C.
impact
D.
relative importance
【简答题】He is asked to (short) _______ his report to one page.
【单选题】?Read the article below about family business, and the questions on the opposite page. ?For each question 13--18, mark one letter (A, B, C, or D) on your Answer Sheet for the answer you choose. FAMILY...
A.
Because there would be abundant capital for operation.
B.
Because family bonds are helpful in overcoming difficulties.
C.
Because they hope to survive for generations.
D.
Because they can make profits without unforeseen problems.
【简答题】凡是由种子起源的林分称作 ( ) 。
【单选题】电力系统发生短路故障时,会引起发电机端电压急剧下降,当发电机端电压下降到约( )额定值时,应迅速将发电机励磁增加到顶值(最大值),称为强行励磁。
A.
80%~85%
B.
20%~25%
C.
90%~95%
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