【单选题】【消耗次数：1】
世界上第一个计算机网络是( )?
①
ARPANet
②
CHINANet
③
因特网
④
CERnet
参考答案：
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随机题目
【单选题】
关于<img src="https://upload.icve.com.cn:89/ssykt/y@92A8E861A9B24D170D1F35EDB9DFDB36.png/download?time=636534391165425735&token=A63BBCFE517ADB52E78F4C616C1B3212&filename=%E8%87%AA%E5%8A%A8%E4%B8%8A%E4%BC%A0p5elah6ofilfkbdrcydsgg20180205145156.png"/>管道连接，图例表示的是（ ）
①
承插连接
②
法兰连接
③
螺纹连接
④
焊接连接
【单选题】
管路布置图中采用 绘出设备布置图， 绘制管道图形， 画出管件、阀门、支架等。1.粗实线 2.细实线 3.点画线 4.中实线
①
1,2,1
②
1,3,2
③
2,1,2
④
3,4,2
【单选题】
mso-bidi-font-family:宋体;mso-font-kerning:0pt;mso-ansi-language:EN-US;
mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">相交剖视图中的箭头方向表示
①
应旋转后投影
②
不画其投影
③
不旋转直接投影
④
旋转后用虚线表示其投影
【单选题】
当图样按看图方向放置时，标题栏必在图框的（ ）位置。
①
Normal
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7.8 磅
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2
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左下角
②
Normal
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7.8 磅
0
2
false
false
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EN-US
ZH-CN
X-NONE
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右下角
③
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7.8 磅
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2
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false
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ZH-CN
X-NONE
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左上角
④
Normal
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7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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右上角