单项选择题
A.8% B.22% C.16% D.18% E.36%
A.头颈部9% B.双上肢18% C.躯干27% D.双臀部9% E.双下肢41%(不含臀部)
A.0.5% B.0.8% C.1% D.1.25% E.1.5%