Westerners often place the knife and spoon on the _____ of the plate and fork on the _____ of the plate.
A. right, left
B. right, right
C. left, left
D. left, right
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You’d better keep your left hand under the table unless you use it in the ______ of cutting.
A. meal
B. course
C. process
D. while
If you are not able to accept an invitation to a dinner, you should ______ in good time and not at the last minute.
A. not come
B. refuse
C. show
D. decline
基准不重合误差是由定位基准与它不重合引起的,它是:
A. 限位基准
B. 工序基准
C. 设计基准
D. 装配基准
基准位移误差是由定位基准与它不重合引起的,它是:
A. 限位基准
B. 工序基准
C. 设计基准
D. 装配基准