单项选择题
A.2%,3.1%,4.5%,5.6%,7% B.3%,3.1%,3.2%,3.3%,3.4% C.3.1%,3.1%,3.1%,3.6%,4% D.3%,3.5%,4%,4.5%,5%
A.4 B.5 C.6 D.7
A.1倍 B.1倍以上3倍以下 C.1倍以上5倍以下 D.10倍