A、master bushing
B、kelly slips
C、kelly bushing
D、rotary bushing
更多“A special device that，when fitted into the rotary table，transmits torque to the kelly and simultaneously permits vertical movement of the kelly to make the hole is called a（）.”相关的问题
A、A. NAT is not supported on SRX Series devices. B、B. NAT requires special hardware on SRX Series devices. C、C. NAT is processed in the control plane. D、D. NAT is processed in the data plane.
A、when they receive a special token B、when there is a carrier C、when they detect no other devices are sending D、when the medium is idle E、when the server grants access
A、when they receive a special token B、when there is a carrier C、when they detect no other devices are sending D、when the medium is idle E、when the server grants access
A、when they receive a special token B、when there is a carrier C、when they detect no other devices are sending D、when the medium is idle E、when the server grants access
A、brake capabilities B、reversing capabilities C、maneuvering capabilities D、acceleration capabilities
A、 Backup retention policy B、 Default backup device type C、 Default destinations for backups D、 Multiple backup device types for single backup E、 Default section size for backups
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