A.1250 B.1200 C.1300
A.5000 B.6000 C.6500
A.監(jiān)視進(jìn)汽流量的變化 B.監(jiān)視軸向位移的變化 C.監(jiān)視汽輪機(jī)通流部分的結(jié)垢情況