A.0.4-0.6 B.0.65-0.8 C.17.5-21 D.8.5-10.5
A.45° B.60° C.30° D.120°
A.繼續(xù)作業(yè) B.關(guān)井等待 C.關(guān)井檢查 D.請(qǐng)示匯報(bào)