When the spindle has axial movement, when turning workpiece (). A: Cylindricity error will be produced on the rotating surface B: Drum shape error will be produced on the rotating surface C: It will affect the axial dimension accuracy and end face shape D: Roundness error will be produced on the rotating surface

Because of the spindle has axial movement, when turning workpiece (). A: roundness error will be produced on the rotating surface B: cylindricity error will be produced on the rotating surface C: it will affect the axial dimension accuracy and end face shape D: drum shape error will be produced on the rotating surface

The machine has stopped rotating because the bearing （） the shaft.

The upside down letter “Fu” was meant to be a rotating symbol for ______.

From the front to the rear of the axial flow compressor，the height of the rotating blades:

The European Union’s rotating ____________ passed from Sweden to Belgium. (preside)

Measures to imroving the theoretical head with infinite blade include A: Increase impeller outer diameter B: decrease impeller outer diameter C: inrease rotating speed of impeller D: decrease rotating speed of impeller

文献：IEEE Standard for Rotating ...Year: 2001，以下说法正确的是：

The<br/>Earth is __________ rotating on its axis. () A: constantly B: opposite C: false D: constant

The president of the international association is appointed on a ______ five-year basis. A: rotate B: rotating C: rotates D: rotation