單項選擇題井下馬達在正常工作時,從上面鉆具過來的泥漿:()

A.10%經(jīng)過旁通閥,10%經(jīng)過徑向滑動軸承,80%經(jīng)過鉆頭水眼
B.5%經(jīng)過旁通閥,12-15%經(jīng)過徑向滑動軸承,80-85%經(jīng)過鉆頭水眼
C.0%經(jīng)過旁通閥,5-7%經(jīng)過徑向滑動軸承,93-95%經(jīng)過鉆頭水眼
D.100%經(jīng)過鉆頭水眼


您可能感興趣的試卷