A.過早開,過晚關 B.過晚開,過晚關 C.過早開,過早關 D.過晚開,過早關
A.0.05一0.10 B.0.08一0.20 C.0.10一0.25 D.0.05一0.15
A.30 B.60 C.90 D.180