某化工厂男性管工，用气焊切割内壁附有大量水银的冷凝管2次，每次工作1小时左右。工作后

对于城市周围有河流或地势向周围倾斜时，排水布置形式宜采用( )。

A．正交式

B．平行式

C．分散式

D．环绕式

根据世界银行、国际咨询工程师联合会的规定，属于项目间接建设成本的是( )。

A．临时公共设施及场地的维护费

B．建筑保险和债券

C．业主的行政性费用

D．杂项开支费用

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（1）处填（）

A.analysis phase

B.designphase

C.implementationphase

D.maintenancephase

我国人口最多的少数民族是______族，人口最少的少数民族是 ______族。