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【单选题】
在汽车发动机中活塞上、下两止点间的距离称为（）。A.
活塞行程
B.
压缩比
C.
发动机工作容积
D.
汽缸总容积
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】Read and choose. （读短文，选择正确的答案） Welcome l our school! This is a 2 room, we often sing and dance here. Next to the music room, there is a 3 room. I like TV room best. It's on the second 4 . That is our ...
【单选题】We prefer ________at the party to________.
A.
to sing, dance
B.
singing ,dancing
C.
to sing , dancing
D.
sing, dance
【单选题】My brother prefers ___________ to ___________. [ ]
A.
to sing; dance
B.
singing; dance
C.
singing; dancing
D.
sing; dance
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