A.6%~8%,異常 B.6%~8%,事故 C.4%~8%,異常 D.4%~8%,事故
A.1.15 B.1.16 C.1.14 D.1.18
A.1/4~1/3 B.1/3~1/2 C.1/5~1/3 D.1/5~1/4