A.3S B.20S C.60S D.60min
A.0 B.1 C.2 D.3
A.汽輪機(jī)數(shù)字調(diào)節(jié)系統(tǒng) B.汽輪機(jī)調(diào)節(jié)系統(tǒng) C.汽輪機(jī)數(shù)字電液調(diào)節(jié)系統(tǒng) D.汽輪機(jī)數(shù)字控制系統(tǒng)