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【单选题】
分组选配法的配合精度决定于( )。A.
零件的加工精度
B.
工人技术水平
C.
零件的加工精度
D.
分组数
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A.
Hard sleeper
B.
soft seat
C.
hard seat
D.
soft seat
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【单选题】"There are no bunks for sleeping, just a nice, comfortable cushioned seat. The carriages are clean and roomy." What type of train ticket does this sentence refer to?
A.
Hard sleeper
B.
Soft sleeper
C.
Hard seat
D.
Soft seat
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