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A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the ______.
A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
参考答案
更多 “ A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the ______.A.drill stem guideB.guide frameC.drill string frameD.casing guide ” 相关考题
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单选题A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the（）.A
drill stem guideB
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