G99 F0.2表示

A. 0.2m/min

B. 0.2mm/r

C. 0.2r/min

D. 0.2mm/min

FANUCO-TD系统G99 F0.35表示(  )。

  A．0.35mm  B．0.35mm/r  C．0.35mm D．0.35mm/min

A. 主轴每转刀具进给0.01mm

B. 主轴每转刀具进给0.01cm

C. 主轴每转刀具进给0.01m

D. 主轴每分转0.01转

执行程序段G99G81X25.0Y75.0R3.0Z-14.8F120.0后，刀具要返回到初始平面。()

执行程序G99 G01 Z-100 F0.3；时，机床发出报警，其原因是(  )。

  A．没有编写G96 B．G90没有写  C．主轴没有启动  D．状态不对

执行程序段G99G81X215.0Y175.0R2.5Z—44.8F150.0后，刀具要返回到初始平面。()

表示英制输入的指令。

A.M99

B.G111

C.G20

D.G93

99 All of the following statements about acceptance sampling are true except:

A. Acceptance sampling plans are beneficial when the cost of inspection is high and the resulting loss of passing nonconforming units is not great.

B. Acceptance sampling plans are necessary when destructive inspections are required.

C. Acceptance sampling plans are never effective at rejecting nonconforming units as 100 percent inspection, even when the inspection process is very tedious.

D. Acceptance sampling plans do not directly control the quality of a series of lots; they instead specify the risk of accepting lots of given quality.

E. Acceptance sampling plans are not very effective for inspecting small lots of custom-made products