单项选择题
A.≤100g,≤0.01g B.≥100g,≥0.01g C.≤100g,≥0.01g D.≥100g,≤0.01g
A.0.01g/Cm3 B.0.02g/Cm3 C.0.05g/Cm3 D.0.10g/Cm3
A.0.9 B.1.0 C.0.6 D.0.8