单项选择题
A.1.40;0.28;0.16B.1.20;0.26;0.17C.1.40;0.30;0.15D.1.30;0.25;0.18
A.1.4mB.1.5mC.1.6mD.1.8m
A.30mB.40mC.60mD.80m