【单选题】
带切口的四棱柱三视图正确的是<img src="https://file.icve.com.cn/ssykt/452/1021/711FF64B7B491C9093FF1F87D8ECE1B0.png"/>
①
<img src="https://file.icve.com.cn/ssykt/881/787/DC7C4F1A45C7BD5F8335A7B012310DEA.png">
②
<img src="https://file.icve.com.cn/ssykt/317/651/4F5A2C03D55BA7012824BCA82B79D285.png">
③
<img src="https://file.icve.com.cn/ssykt/58/93/0E817496D3FD01A1AAE73C9C4FD21B83.png">
④
<img src="https://file.icve.com.cn/ssykt/934/434/E986C848A424B53F9A0B5277EE56132B.png">
【单选题】
一个几何体的三视图如图所示，则此几何体的体积是（ ）<img src=http://huaweicloudobs.ahjxjy.cn/9189b19d6787372c4ff316bf00a15e77.png/>
①
80
②
112
③
72
④
64
【单选题】
正投影法中，投影面、观察者、物体三者相对位置是( )
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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人——面——物
②
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;
font-family:等线;
mso-ascii-font-family:等线;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
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mso-hansi-theme-font:minor-latin;
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物——人——面
③
Normal
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7.8 磅
0
2
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ZH-CN
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C. 人——物——面
④
Normal
0
7.8 磅
0
2
false
false
false
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ZH-CN
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mso-para-margin:0cm;
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mso-bidi-font-size:11.0pt;
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mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
面——人——物