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【单选题】
关系数据库中有三种基本操作，从表中取出满足条件的属性成分的操作称为 ______。
A.
选择
B.
投影
C.
连接
D.
扫描
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举一反三
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外墙装饰用架
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内墙砌筑用架
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内墙装饰用架
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【多选题】综合脚手架包括( )等,高层脚手架50.5m至200.5m还包括托架和拉杆费用。
A.
脚手架
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斜桥
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【多选题】依据计量规范,清单项目综合脚手架包括( )内容。
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脚手架搭设拆除
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安全网的铺设
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脚手架基础补强
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【简答题】一、单项填空 1. – Sir, is this design acceptable? – . A. No, I like it B. Yes, it needs improving C. I have no idea D. Yes, please 2. It’s urged that immediate measures to settle the problem. A...
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【简答题】I. Review the More Reading “The Concert Hall Which Moved” and fill in each blank with no more than four words. The building ____1_____ and built in 1930 by ____2_____. The building was ______3_____ sh...
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【简答题】Questions 1-5 Complete the sentences below. Choose NO MORE THAN ONE WORD AND/OR A NUMBER from the passage for each answer. 1 The water levels in the Toiro River are falling because of _______________...
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A.
脚手架搭设拆除
B.
安全网的铺设
C.
斜道搭拆
D.
脚手架基础补强
E.
电动装置测试
查看完整题目与答案
【简答题】一、单项填空 1. – Sir, is this design acceptable? – . A. No, I like it B. Yes, it needs improving C. I have no idea D. Yes, please 2. It’s urged that immediate measures to settle the problem. A...
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