A.與套管尺寸無(wú)關(guān) B.隨套管尺寸的增大而升高 C.隨套管尺寸的增大而降低 D.與套管規(guī)范無(wú)關(guān)
A.5MP B.4MP C.2MP D.0.5MP
A.10~15MP B.15~20MP C.20~25MP D.25~30MP