2024智慧树网课答案 Mechanical Engineering Practice 金工实习 最新完整智慧树知到满分章节测试答案

绪论 单元测试

1、 问题:

In this course, which part does the knowledge of “injection molding” belong to?

选项：
A:Industrial Design;
B:Manufacturing; 
C:3D digital measurement;
D:CNC Turning
答案: 【
Manufacturing; 
】

第一章 单元测试

1、 问题:

The parting plane is the contact surface between the stationary and moving sides of the mold. 

选项：
A:对
B:错
答案: 【
对
】

2、 问题:

During the plastication stage, the polymer melt is forced from the barrel of the molding machine and into the mold. 

选项：
A:对
B:错
答案: 【
错
】

3、 问题:

After the mold cavity is filled with the polymer melt, the packing stage provides additional material into the mold cavity as the molten plastic melt cools and contracts. 

选项：
A:对
B:错
答案: 【
对
】

4、 问题:

An injection mold has many structures to accomplish the functions required by the injection molding process. 

选项：
A:对
B:错
答案: 【
对
】

5、 问题:

An injection mold is constructed of a number of plates, bolted together with socket head cap screws. 

选项：
A:对
B:错
答案: 【
对
】

第二章 单元测试

1、 问题:

Whether a part is qualified depends first on whether it has reached the basic size. Just equal to the basic size must be qualified products.（ ）

选项：
A:对
B:错
答案: 【
错
】

2、 问题:

Dimensional deviation is the difference of a certain size minus its basic size, so the size deviation can be positive, negative and zero. （ ）

选项：
A:对
B:错
答案: 【
对
】

3、 问题:

Position tolerance can be divided into three categories: directional tolerance, positioning tolerance and runout tolerance.（）

选项：
A:对
B:错
答案: 【
对
】

4、 问题:

The surface roughness of parts is directly related to the processing method.（）

选项：
A:对
B:错
答案: 【
对
】

5、 问题:

 Surface roughness belongs to micro geometric error. （）

选项：
A:对
B:错
答案: 【
对
】

6、 问题:

The surface roughness symbol represents the machined surface obtained by material removal. （）

选项：
A:对
B:错
答案: 【
错
】

7、 问题:

When measuring workpiece with vernier caliper, the measurement error will increase if the force is too large or too small. （）

选项：
A:对
B:错
答案: 【
对
】

8、 问题:

The outer diameter micrometer is a measuring tool for measuring aperture and groove depth. （）

选项：
A:对
B:错
答案: 【
错
】

9、 问题:

The vernier universal angle ruler can measure any angle from 0 to 360 degrees. （）

选项：
A:对
B:错
答案: 【
错
】

10、 问题:

Relative measurement method is used when measuring length with percentile meter. （）

选项：
A:对
B:错
答案: 【
对
】

第三章 单元测试

1、 问题:

While earlier work in Japan is quite well-documented, proving that this concept could be realized, it was the patent by Charles Hull that is generally recognized as the most influential  since it gave rise to 3D Systems.

选项：
A:对
B:错
答案: 【
对
】