A.2%~10.0% B.0.2%~1.O% C.1%~2.0% D.O.2%以内
A.260WK B.240WK C.220WK D.200WK
A.定量描述法 B.定性差异分析法 C.定量差异分析法 D.比例法
A.40 B.50% C.60% D.70%
A.5% B.6% C.7% D.8%