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【单选题】
汽油压力调节器的作用是( )。A.
控制电动汽油泵供油压力保持恒定
B.
控制喷油器的喷油压力和进气歧管的绝对压力的压差保持恒定
C.
控制喷油器的喷油压力保持恒定
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【简答题】根据句意及首字母提示完成下列各单词。 1. I don’t think your shoes are made of real l _______. 2. —What do you think of this shirt? —Well, I like its s_______, but I don’t like its colour. 3. Sandy likes doing nothing. S...
【简答题】听句子，选择正确答语。每个句子读两遍。 ( )1.A. It’s very interesting. B. I don’t think so. C. Let’s go and ask our teacher. ( )2. A. Once. B. Once a week. C. Two weeks. ( )3. A. Math is boring. B. I like Eng...
【简答题】金属材料的性能包括 性能 和 性能
【简答题】Complete the sentences with the expressions listed below in their proper forms. specialize in be true of preside over be exposed to be stuck for have no business doing sth. see to it average out be ou...
【简答题】机械工程材料的性能包括 和 。
【单选题】The new club ____ in our school at the beginning of this year.
A.
was started
B.
startes
C.
started
D.
is started
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