单项选择题
A.0.1% B.0.15% C.0.2% D.0.25%
A.0.5;0.5 B.1.0;0.5 C.1.5;0.5 D.1.5;1
A.48mm33.5mm B.48mm34.0mm C.45mm33.5 D.45mm34.0mm