【单选题】【消耗次数：1】
在一个平面上对V、H、W投影，投影面分别有（）组投影面平行。
①
2
②
4
③
3
参考答案：
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相关题目
【单选题】
当直线、平面与投影面平行时，该投影面上的投影具有( )
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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积聚性
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-bidi-font-size:11.0pt;
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真实性
③
Normal
0
7.8 磅
0
2
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false
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ZH-CN
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mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
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类似收缩性
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
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mso-bidi-font-size:11.0pt;
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mso-ascii-font-family:等线;
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mso-hansi-theme-font:minor-latin;
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收缩性
随机题目
【单选题】
以20世纪（）爆发的经济危机为界，此前金融监管的目标主要是提供一个稳定和具有弹性的货币供给，并防止银行挤兑带来的消极影响。
①
30年代
②
40年代
③
50年代
④
70年代