when drilling, the drill rotates and moves axially. Thus, The main motion is the motion of the drill.

车削的英文单词是（） A: Drilling B: Turning C: Milling D: Machine

铣削的英文单词是（）。 A: drilling B: turning C: milling D: machine

petroleum mud logging technology is characterized by multi-parameters, large amount of information, fast and real-time on site, and its main functions are ( ). A: discover oil and gas reservoirs in time B: evaluate oil and gas reservoirs while drilling C: provide resource evaluation parameters D: ensure safe drilling

There are five basic types of machine tools such as lathe or turning machine, drilling or boring machine, milling machine, shaper or planer, and grinder.

Which of the following is not included in the ore transportation method?( ) A: Gravity transportation B: Mechanical transportation C: Drilling transportation D: Hydraulic transportation

The general formation testing method for areal exploration well . A: Original drilling rig（Midway test） B: Conventional well completion test

When processing the chamfer of M10 hole, the machine tool and tool are（ ） A: Lathe, 45 ° offset tool B: Vertical drilling machine, countersink

On offshore drilling units，each EPIRB or SART must be tested once every（）. A: Aday B: Bweek C: Cmonth D: Dyear

According to Cognitive Approach, the focus of classroom teaching are the following aspects except ______. A: rule learning B: drilling C: meaningful practice D: creativity