单项选择题
A.52.92% B.47.08% C.88.98% D.43.04% E.无法计算
A.22.6/10万 B.1.89 C.48.0 D.0.00048 E.无法计算
A.0.40‰ B.0.89‰ C.92.7% D.87.5% E.0.49‰