A.正循環(huán)排出溢流 B.反循環(huán)排出溢流 C.壓井 D.關井
A.0.8,0.5 B.0.5,0.3 C.0.5,0.2 D.0.3,0.2
A.8h B.12h C.24h D.36h
A、要大 B、要小 C、不變
A.9.77 B.10.77 C.11.77 D.12.77