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问题 多项选择题

建设工程文件档案的特征有( )。

A．规范性和通用性

B．多专业和综合性

C．继承性和时效性

D．全面性和真实性

E．分散性和复杂性

答案

参考答案：B,C,D,E

解析： 除选项B、C、D、E外，建设工程文件档案的特征还有随机性。

选择题

下列关于化学反应的自发性叙述中正确的是（　　）

A．焓变小于0而熵变大于0的反应肯定是自发的

B．焓变和熵变都小于0的反应肯定是自发的

C．焓变和熵变都大于0的反应肯定是自发的

D．熵变小于0而焓变大于0的反应肯定是自发的
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单项选择题 共用题干题

Many of the activities performed during the preliminary investigation are still being conducted in(1),but in much greater depth than before. During this phase, the analyst must become fully aware of the (2) and must develop enough knowledge about the (3)and the existing systems to enable an effective solution to be proposed and implemented. Besides the(4)for process and data of current system, the deliverable from this phase also includes the(5)for the proposed system.

空白（2）处填（）

A.main symptom

B.rootproblem

C.finalblueprint

D.dataspecification
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