尺寸公差是_____________与____________之差。
尺寸公差带的大小由_______决定；位置由 _______ 决定。
Please choose the best answer to the blank.—Good morning, I'd like to see Mr. Baker, please.—Mr. Baker is quite busy.
A. You can't see him.
B. You won't be able to see him.
C. I'm afraid you won't be able to see him today.
D. Please come next time.
—Will you be able to come to see us sometime next month?—______________.
A. I believe yes.
B. I don't hope so.
C. I won't be able to.
D. I'm afraid not.
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