A.鉤載壓力傳感器B.鉆井液壓力傳感器C.深度計(jì)數(shù)傳感器D.電纜
A.自然伽馬儀B.自然電位儀C.補(bǔ)償中子儀D.巖性密度儀
A.15~17mB.17~20mC.20~23mD.23~25m