
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
《电子商务概论》第一套试题
总共 50 题共 100 分
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一. 单选题 (共 20 题,共 40 分)
1. 将电子商务分成有形商品电子商务与无形商品电子商务的分类标准是( )。 (2 分)
2. “网络的价值随着拥有成员的增加而不断增加”称之为( )。 (2 分)
3. 能够实现对原文的鉴别和不可否认性的认证技术是( )。 (2 分)
4. UN/EDIFACT 数据格式的数据元是( )。 (2 分)