题目内容

精车大模数ZA蜗杆时，必须使车刀左右刀刃组成的平面处于水平状态并与工件中心等高，以减少（）误差。

A. 齿
B. 导程
C. 齿形
D. 齿厚

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Data collection should be performed by illiterate assistants,______.

A. according to Bacon, as it led to speculation
B. according to Bacon, to prevent theories from being formulated on insufficient data
C. was a notion Bacon strongly opposed
D. was a notion rejected on the grounds that it led to premature speculations

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