大学MOOC Engineering Training(Hebei University of Technology)1458232173 最新慕课完整章节测试答案
01 Introduction
文章目录
01 Unit Detection of Introduction
1、单选题：
In training, the incorrect practice behavior is ( )
选项：
A: Do not do anything unrelated to the practice
B: You can go back and do your own thing at any time
C: Obey the arrangements and deployment of the instructor
D: Observe class disciplines, do not arbitrarily leave your post and visit others during work hours
答案: 【 You can go back and do your own thing at any time】
2、单选题：
When multiple people operate a machine tool, ( )
选项：
A: two people can operate the machine at the same time
B: only one person can operate at the same time
C: only one person can operate at the same time, and other students can leave the machine to rest
D: All of the above are correct
答案: 【 only one person can operate at the same time】
3、单选题：
The accuracy of the vernier calipers of 50 equally divided verniers is ( ) mm.
选项：
A: 0.05
B: 0.02
C: 0.5
D: 0.2
答案: 【 0.02】
4、单选题：
The reading of the vernier caliper (there are 50 equal divisions on the vernier) is ( ) mm
选项：
A: 9.52
B: 10.52
C: 9.26
D: 10.26
答案: 【 10.52】
5、判断题：
Vernier calipers can be used as other tools.
选项：
A: 正确
B: 错误
答案: 【 错误】
02 Casting
02 Unit Detection of Casting
1、单选题：
What molding method should be used to cast a single piece? ( )
选项：
A: Solid pattern molding
B: Parted pattern molding
C: Three-part molding
D: Loose piece molding
答案: 【 Parted pattern molding】
2、单选题：
Excessive moisture in the molding sand will bring about ( ) on castings.
选项：
A: blow hole
B: shrinkage cavity
C: sand hole
D: crack
答案: 【 blow hole】
3、判断题：
Pouring temperature is too high will bring about crack on castings.
选项：
A: 正确
B: 错误
答案: 【 正确】
4、判断题：
When ramming the sand, in order to improve the efficiency, the molding sand can be added to the sand box at one time.
选项：
A: 正确
B: 错误
答案: 【 错误】
5、判断题：
The gating system usually consists of a puring basin, a sprue, a runner and ingate.
选项：
A: 正确
B: 错误
答案: 【 正确】