－ What does the sign over there read － “No person ________ smoke or carry a lighted cigarette, cigar or pipe in this area”

就某一问、某种工作或某项重大活动所进行的专门总结，称为

____是指专门就某一项目、某一问或某一事件进行的调查。

某一时刻的调查数据称为时点数据，某一段时期内的调查数据称为时期数据。以下几种实际调查数据中，属于时点数据的是______。

Either he or I ______to the airport.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

Duty is an act or a course of action that people ______you to take by social customs, law or religion.

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

就某一主体或某一主题所处的宏观环境进行分析的特殊研究方法是社会风险的定性分析中的（）。

（），是指专门就某一项目、某一问题或某一事件进行的调查。?

顾客总价值是指顾客购买某一产品与服务所期望获得的_______________。