加压接头装在（）之间，钻进时传递动力和钻压。A、取心工具和钻_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

加压接头装在（）之间，钻进时传递动力和钻压。

A、取心工具和钻头

B、钻铤和钻杆

C、取心工具和钻铤

D、钻铤和钻头

答案

参考答案：C

选择题

— You all like your English teacher?

— Yeah, she devotes herself ____ to teaching and it earns her a good reputation. [ ]

A. originally

B. extremely

C. obviously

D. entirely

判断题

假山主峰一般应立在正中。