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【判断题】
等加速等减速运动规律的凸轮机构传动时存在一定的刚性冲击。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】---- It's so cold! Why are your windows still open? ---- Oh, they _______．
A.
aren't closing
B.
won't close
C.
won't be closed
D.
aren't closed
【简答题】地貌的最小单位是 ;在地段的组成成分中, 是分异的主导因素。
【单选题】He says that if it _______ tomorrow , he _____fishing.
A.
will rain , won't go
B.
rains , won't go
C.
rain , will go
【单选题】He says that if it __ tomorrow , he ___ fishing
A.
will rain , won't go
B.
rained , wasn't go
C.
rains , won't go
D.
rain , will go
【单选题】Why won't the car start?
A.
It has no gas.
B.
The door won't open.
C.
The battery is broken.
【单选题】—It’s so cold! Why not close the door? —Sorry.It .I’ll have it repaired soon.
A.
won’t shut
B.
won’t be shut
C.
hasn’t shut
D.
isn’t shut
【简答题】He
says that if it _______ tomorrow , he _______ fishing .A. will rain , won't go B. rained , wasn't go C. rains , won't go D. rain , will go
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