单项选择题
A.60 B.70 C.80 D.100
A.130(+0.025,+0.052)mm B.131(+0.025,+0.052)mm C.130(+0.018,+0.052)mm D.130(+0.025,+0.047)mm
A.18 B.24 C.20 D.22
A.4;2;1 B.3;2;1 C.7;4;2 D.4;2;2
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