A. 0.3 B. 0.4 C. 0.5 D. 0.6
A. (A)0.02~0.03mm B. (B)0.02~0.04mm C. (C)0.02~0.05mm D. (D)0.02~0.06mm
A. -0.95 B. +0.95 C. +0.05 D. -0.05
A. 正确 B. 错误