A.1500±200h B.1500±250h C.1100±250h D.1100±100h
A.1 B.2 C.3 D.4
A.30分钟 B.45分钟 C.50分钟 D.1小时
A.10 B.15 C.20 D.25
A.10 B.20 C.50 D.170