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【单选题】
发动机润滑系统中,润滑油的主要流向是()A.
机油机滤器--机油泵--粗滤器--细滤器--主油道--油底壳
B.
机油集滤器--机油泵--粗滤器--主油道--油底壳
C.
机油集滤器--机油泵--细滤器--主油道--油底壳
D.
机油集滤器--粗滤器--机油泵--主油道--油底壳
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反馈参考答案：
举一反三
【简答题】Why is Judy so happy today? A) She's my friend. B) She had lunch. C) She passed the entrance exam. D) She is a pretty girl.
【简答题】根据红细胞内所含的（）不同，将人的血型分为四种类型，即（）型血、（）型血、（）型血、（）型血。
【单选题】— I often walk home after school. — ______. [ ]
A.
So she is
B.
So is she
C.
So she does
D.
So does she
【单选题】According to the passage, the blue jeans' popularity was caused by ______.
A.
nineth-century laborers
B.
American film and media
C.
the unfolding of popular culture
D.
the imaginations of city folk
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