单项选择题
A.0.1 B.0.15 C.0.2 D.0.25
A.0.5B.0.7C.0.9D.1.0
A.1.0 B.1.5 C.2.0 D.2.5
A.0.02,0.03 B.0.03,0.04 C.0.04,0.03 D.0.05,0.03
A.0.01 B.0.02 C.0.03 D.0.05
A.1.2,0.5 B.1.5,0.5 C.1.2,0.6 D.1.5,0.6
A.2,2 B.3,3 C.4,4 D.5,5
A.1/2B.1/3C.2/3D.1/4
A.31mm B.44mm C.61mm D.80mm