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【单选题】
395/1006 排放控制系统包括曲轴箱强制通风系统、蒸发排放系统、 ( ) 以及废气再循环系统四个系统。A.
涡轮增压系统
B.
二次喷射系统
C.
三元催化转换系统
D.
高压共轨系统
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【简答题】北京的皇城有四门分别是
【单选题】As we all know, the 29th Olympic Games _____ in Beijing in 2008. [ ]
A.
were held
B.
will hold
C.
is to hold
D.
are hold
【简答题】As we all know, eating habits are different in different countries. The Chinese have a . “Eat good things for breakfast, eat a big meal for lunch, but eat at dinner.” Many Americans agree that one sho...
【简答题】完形填空。 Do you know how to study better and make your study more effective (有效的)?We all know that Chinese students usually study very hard for long 1 .This is very good but it doesn't 2 a lot,for an eff...
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