单项选择题
A.0.96~1.05克/立方厘米B.0.90~0.98克/立方厘米C.0.95~1.01克/立方厘米D.0.89~0.99克/立方厘米
A.2001B.2002C.2003D.2005
A.0.36%B.0.3%C.0.06%D.0.05%