题目内容

1. We promise (give)_________ you a reply within five work days.2. The bank loan has (great)________ strengthened our financial position in the industry.3.Photography has changed our way of (view) __________ the world.4. That new model of the machine is not likely to go into (produce)___________ before late 2018.5.Anyone applying for a visa to China (require) _________ to have finger prints taken.

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存在非主属性对码的部分函数依赖是

A. 1NF
B. 2NF
C. 3NF
D. 4NF

关系模式R(W,X,Y,Z),其函数依赖的集合是F={WX→Y, W→X, X→Z, Y→W},其候选键为:

A. W和Y
B. WY
C. WX
D. WZ

属于屋面涂膜防水施工工艺的流程有( )。

A. 基层表面清理、修理
B. 喷涂基层处理剂
C. 保护层施工
D. 节点部位的附加增强处理
E. 涂抹水泥浆

年12月,通过了俄罗斯独立后的第一部新宪法,其规定:俄罗斯联邦是 国家。

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