单项选择题
A.95.5%~97.5%B.96.5%~98.5%C.97.5%~99.5%D.98.5%~101.5%
A.钠、钙B.镍、钡C.铜、锑D.硅、铝
A.柴油B.汽油C.柴油和澄清油D.汽油和澄清油