糜财锯黑穿叫航晒扯猎弛请贾
第一章 单元测试
1、
What does a thick line represent in drawing?
A:represent symmetrical line
B:represent invisible line
C:represent hatching line
D:represent visible line
答案: represent visible line
2、
The possible direction of a dimension text should towards?
A:right
B:left
C:down
D:upper
答案: left;upper
3、
The “R” and “∅ ” means radius and diameter.
A:错
B:对
答案: 对
4、
The main contents of title block are:
A:part name
B:student ID NO.
C:class
D:signature
答案: part name;student ID NO.;class;signature
5、
The elements of the dimension
A: text
B: dimension line
C: arrow head
D: extension line
答案: text; dimension line; arrow head; extension line
6、
Thin dashed dotted line to indicate axis line ,symmetrical center lines.
A:对
B:错
答案: 对
7、
Continuous thin irregular line to indicate part sectional boundary lines or to terminate a part view, and for short break line.
A:错
B:对
答案: 对
8、
Thick dashed line shown can be made surface-treatment
A:错
B:对
答案: 对
9、
A compass is used to draw circles and arcs
A:错
B:对
答案: 对
第二章 单元测试
1、
Which coordinates are related to H projection of a point?
A:x,y
B:y,z
C:x,y,z
D:x,z
答案: x,y
2、
How can you represent V projection of a point?
A:a
B:a”
C:A
D:a’
答案: a’
3、
Which projection accumulates as a point for a H perpendicular line?
A:no projection accumulates as a point
B:W
C:V
D:H
答案: H
4、
Which projection is the true length for a frontal line?
A:W projection
B:no projection
C:V projection
D:H projection
答案: V projection
5、
How many types of parallel line are there relative to projection plane?
A:2
B:1
C:3
D:4
答案: 3
6、
How many relationships between two lines?
A:3
B:4
C:1
D:2
答案: 3;4
7、
If two projections of two lines are parallel, then the two lines are parallel in space
A:对
B:错
答案: 错
8、
The true length projection of a line appears in a projection plane that is parallel to the line
A:错
B:对
答案: 对
9、
Two lines are parallel in space provided that their respective projections on two projection planes are parallel.
A:错
B:对
答案: 对
10、
If a line is parallel to any line in a plane, the line is parallel to the plane.
A:对
B:错
答案: 对
第三章 单元测试
1、
What type of intersection line can you get, when a sphere cut by a plane?
A:uncertain
B:straight line
C:circle
D:ellpse
答案: circle
2、
Known to have four sets of projections of a sphere with a circular hole, the correct set is ( ) 
A:c
B:a
C:b
D:d
答案: c
3、
Known solid’s main view and top view, select correct left view ( )
A:a
B:d
C:b
D:c
答案: a
4、
Given the main view and top view of the solid, the correct left view is ( )
A:d
B:b
C:a
D:c
答案: c
5、
According to the main and top views, select the right left view ( )
A:b
B:c
C:d
D:a
答案: a
6、
Select the correct left view ( )
A:a
B:d
C:b
D:c
答案: c
7、
Select the correct left view ( )
A:a
B:d
C:c
D:b
答案: d
8、
Select the correct left view ( )
A:c
B:d
C:b
D:a
答案: b
9、
Select the correct top view ( )
A:d
B:a
C:b
D:c
答案: a
10、
Select the correct top view ( )
A:d
B:a
C:c
D:b
答案: b
11、
Select the correct left view ( )
A:b
B:c
C:a
D:d
答案: c
12、
Select the correct left view ( )
A:a
B:d
C:c
D:b
答案: d
13、
Select the correct top view ( )
A:d
B:b
C:a
D:c
答案: b
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