Among the following deep drawing methods, which have a great impact on the original shaft production? ( ) A: Direct extension of shaft B: Direct extension of inclined shaft C: Deepening of concealed shaft D: Deepening of inclined shaft

Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.

In order to reduce the number of the cutting tools and measuring tools which are used to manufacture and measure machine parts, two fit systems are applied, hole-basis system and shaft-basis system, in which the shaft-basis system is the most commonly used one.

The delayed value of rotation angle of the output shaft when the rotation of input shaft turns from positive to negative is . A:

The （） of the main shaft should be measured with a （）.

The volatile content of () is used as the classification basis for power coal. A: as received basis B: air drying basis C: dry basis D: dry and ash free basis

What does the underlined word “shaft” refer to in this passage?

"Support" generally means work to fix bugs ________ , generally for more urgent and breaking bugs. A: on a scheduled basis B: on a regular basis C: on an ad hoc basis D: on a routine basis

Which of the following are common forms of comprehensive development?( ) A: Development of main inclined shaft-auxiliary vertical shaft B: Development of main shaft-auxiliary inclined shaft C: Main shaft-auxiliary adit D: Multi-shaft areas development

on the basis of