A.1020-1050 B.1050-1080 C.1080-1150 D.1150-1250
A、≥96% B、≥98% C、≥99% D、達(dá)到合同規(guī)定的保證值
A、≥1.5kV B、≥2kV C、≥2.5kV D、≥3kV