A: Pinion tooth surface hardnesslarge gear tooth surface hardness
B: Pinion tooth surface hardness≤large gear tooth surface hardness
举一反三
- The tooth is usually divided into three parts ( ). A: Tooth crown B: Tooth neck C: Tooth surface D: Tooth root E: Tooth foot
- 以眼还眼，以牙还牙。 A: An eye for an eye and a tooth for a tooth. B: An eye for a eye and a tooth against a tooth. C: An eye for two eyes and a tooth for a tooth.
- tooth
- A tender tooth is ______.
- ______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface
内容
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The principles for machining sequence of each surface should be( )<br/>and perform rough machining before finish machining. A: perform datum surface machining before that of other surfaces B: perform main functional surface machining before less important surface machining C: perform plane surface machining before hole surface machining D: perform complex surface machining before simple surface machining
- 1
_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface
- 2
What is the name of the solid surface in the figure below?[img=360x664]1803bb9e6fc6d99.jpg[/img] A: circular cone surface B: Cone-shaped surface C: Cylindrical surface D: Columnar surface
- 3
You need to brush your after . A: tooth, eat B: teeth, eating C: tooth, eating D: teeth, eat
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What would the doctor do next? A: He would remove the tooth of Lucy. B: He would wash the tooth of Lucy.