单项选择题
A.1.65Mpa B.1.7Mpa C.1.8Mpa D.1.95Mpa
A.6kV系统 B.35kV系统 C.13.8kV系统 D.400V系统
A.1.2Mpa B.1.35Mpa C.1.5Mpa D.1.65Mpa