【单选题】一般说来,对工件加工表面的位置误差影响最大的是()。
【简答题】If he hadn’t been so (care), he wouldn’t have made so many spelling mistakes.
【单选题】一般来说,夹具误差对加工表面的哪种误差影响最大()
【判断题】( )一般说来,对工件加工表面的位置误差影响最大的是夹具误差。
【单选题】.__________, we would not have achieved so much.
A.
If they didn’t help us
B.
If it hadn’t been their help
C.
Weren’t it for their help
D.
Had it not been for their help