单项选择题
A.1.25% B.12.5% C.2.5% D.25%
A.2934457.3,3.2 B.5503906.8,2.0 C.1176002.0,2.2 D.5503906.8,2.2
A.56.5 B.34.2 C.32.3 D.62.7