题目内容

AB表示（）

AB同时发生
B. A发生
C. B发生
D. A,B至少有一个发生

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In the street, he could feel the happiness of Christmas.

A. Worked
B. Walking
C. To work
D. Having worked

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the questions are,he is able to answer them.

A. The more difficult; the likely
B. The difficult more; the likely less
C. The much difficult; the more likely
D. The more difficult; the less likely

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牵引双管供风车体时，需将两机车的总风缸管进行连接，并开放折角塞门，再将无火机车两风泵右侧的双风管调压阀止阀和调压阀旁通阀均打到与管路垂直方向，调压阀旁通阀——机车重联供风塞门（）kpa。

A. 600
B. 900
C. 700
D. 800

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The article more attention to the problem of culture interference in foreign language teaching and learning

A. calls for
B. calls off
C. calls in
D. call up

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AB表示（ ）

AB同时发生 B. A发生 C. B发生 D. A,B至少有一个发生

In the street, he could feel the happiness of Christmas.

the questions are,he is able to answer them.

牵引双管供风车体时，需将两机车的总风缸管进行连接，并开放折角塞门，再将无火机车两风泵右侧的双风管调压阀止阀和调压阀旁通阀均打到与管路垂直方向，调压阀旁通阀——机车重联供风塞门（）kpa。

The article more attention to the problem of culture interference in foreign language teaching and learning

AB表示（）

AB同时发生
B. A发生
C. B发生
D. A,B至少有一个发生