题目内容
(请给出正确答案)
[单选题]
在测长机上检定内径千分尺组合尺寸L时,必须使用V形架和工作台支承内径千分尺,其支承位置应牌离内径千分尺测量端面的距离a为()。
A.a=0.21131
B.a=0.22031
C.a=0.22321
答案
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A.a=0.21131
B.a=0.22031
C.a=0.22321
第5题
A.120.037-120.059,0.04-0.09
B.120.020-120.059,0.04-0.09
C.120.037-120.059,0.01-0.04
D.120.020-120.059,0.01-0.04
第6题