单项选择题
A.50~100mPa.SB.300~400mPa.SC.500~700mPa.sD.800~900mPa.s
A.0.6~0.8m3/minB.0.7~0.9m3/minC.0.2~0.4m3/minD.0.4~0.6m3/min
A.分层压裂B.平衡压裂C.桥塞压裂D.尾喷嘴