A.大于等于DC1.5V B.大于DC1.5V C.大于等于DC1.3V D.大于DC1.3V
A.0.45~0.6MPA B.0.45~0.65MPA C.0.45~0.7MPA D.0.45~0.8MPA
A.2455N B.2445N C.2450N D.2460N