井下动力钻井与旋转钻井基本相同,只是钻头不再由转盘带动旋转,而是由井下动力钻具直接驱动,钻柱不需转动。
查看答案
《水浒》的作者是()
A. 吴承恩
B. 蒲松龄
C. 施耐庵
Company.com has non-IBM fibre attached storage. The storage is connected to a node in the cluster that has multiple adapters and virtual paths. There is a concern about detecting the loss of one of the fibre adapters since there is no indication to the administrator that one has failed. What feature of HACMP can be sued to assist with this issue?()
A. Disk heartbeat
B. Error notification
C. Event notification
D. Application monitor
无热再生空气干燥器再生塔抽样时,程控器电源()
A. 必须稳定
B. 必须关闭
C. 不能断电
D. (C)都不对