A.孔口出漿 B.孔口進(jìn)漿 C.孔口噴漿 D.孔口回漿
A.先上游排孔,后中間排孔,最后下游排孔 B.先下游排孔,后中間排孔,最后上游排孔 C.先下游排孔,后上游排孔,最后中間排孔 D.先中間排孔,后下游排孔,最后上游排孔
A.6% B.7% C.5% D.10%