【单选题】【消耗次数：1】
水平投影重合的两个点，称为（ ）。
①
水平重影点
②
不能确定
③
正面重影点
④
侧面重影点
参考答案：
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相关题目
【单选题】
下列关于重影点投影可见性的判别方法说法有误的一项是（ ）。
①
对正面重影点，观者从前向后看，前面一点看得见，后面一点看不见
②
对侧面重影点，观者从左向右看，左面一点看得见，右面一点看不见
③
对水平重影点，观者从上向下看，上面一点看得见，下面一点看不见
④
在投影图上判别重影点的可见性时，要求把看的见的点的投影符号用括号括起来
【单选题】
已知四点A（10、20、30）、B（30、20、10）、C（10、20、10）、D（20、20、30），则对H面的重影点为______。
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
A与D，D点可见
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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B与C，B点可见
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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A与C，A点可见
④
Normal
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0
2
false
false
false
EN-US
ZH-CN
X-NONE
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A与C，C点可见
【单选题】
地面两点间的水平距离是指（ ）。
①
该二地面点间连线的长度
②
该二地面点之连线投影于水平面上的线段长度
③
该二地面点之连线铅垂投影于水平面上的线段长度
④
过该二地面点的铅垂线之间的距离
随机题目
【单选题】
If your new coat is too large, a tailor can____ it to fit you.
①
alter
②
transform
③
vary
④
change
【单选题】
Many automobile accidents were ____ careless driving.
①
attributed to
②
resulted in
③
contributed to
④
raised from
【单选题】
To obtain a satisfactory result, one must apply
two ____ of paint on a clean surface.
①
coats
②
levels
③
times
④
courses
【单选题】
No one would have time to read or listen to an account of everything ____going on in the world.
①
it is
②
as is
③
there is
④
what is
【单选题】
They have done things they ought_____.
①
not to do
②
not to be done
③
not to have done
④
not having done
【单选题】
____ native to North America, corn has now spread all over the world.
①
In spite of
②
That it is
③
It was
④
Although
【单选题】
Bit by bit, a child makes the necessary changes to make his language ____.
①
as other people
②
as other people’s
③
like other people
④
like other people’s
【单选题】
Please____ me whether I should accept the offer.
①
advise
②
suggest
③
propose
④
direct
【单选题】
All the flights ____ because of the snowstorm, we had
to take the train instead.
①
were canceled
②
had been canceled
③
having canceled
④
having been canceled