试题详情

重量法测定硅酸盐中SiO2的含量,结果分别为:37.40%,37.20%,37.32%,37.52%,37.34%,平均偏差和相对平均偏差是(___)。

A0.04% 0.58%

B 0.08% 0.21%

C0.06% 0.48%

D 0.12% 0.32%