A.50% B.60% C.70% D.80%
A.20% B.30% C.40% D.50%
A.轉(zhuǎn)速<2985或轉(zhuǎn)速>3015 B.轉(zhuǎn)速信號(hào)測(cè)量故障 C.并網(wǎng) D.汽輪機(jī)跳閘