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【单选题】
二冲程柴油机气缸套上的扫气口带有纵横两个方向的倾斜度，其目的是：A.
增加气缸强度
B.
有利于气缸冷却
C.
改善扫气效果
D.
增加进气量
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举一反三
【单选题】—He asked her_________the bag because it was too expensive．
A.
not to buy
B.
to buy not
C.
not buying
D.
not buy
【简答题】阅读理解。 A man loses a needle in the room. He looks for it on the floor, but it is too dark in the room and he can’t see it. He comes out and looks for the needle in the street. A friend comes up. “What ...
【单选题】He offered to______her a hand as the bag was too heavy for her to carry.
A.
lend
B.
help
C.
show
D.
borrow
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