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问题 单项选择题

对商品或劳务的个人需求曲线（）

A.给出了在任一价格水平上，个人将会购买的商品或劳务数量

B.给出了市场均衡价格

C.表示了根据替代效应其它商品将会被替代掉

D.以上都对

E.A和C

答案

参考答案：A

选择题

—What about playing football this afternoon ?

--I prefer ________at home to ______out .It’s too hot outside .

A．stay ;go

B．to stay ;go

C．staying ;go

D．staying ;going
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单项选择题 共用题干题

Estimating schedule activity costs involves developing an (1) of the cost of theresources needed to complete each schedule activity. Cost estimating includes identifying and considering various costing alternatives. for example, in most application areas, additionalwork during a design phase is widely held to have the potential for reducing the cost of the execution phase and product operations. the cost estimating process considers whether the expected savings can offset the cost of the additional design work. cost estimates are generally expressed in units of (2) to facilitate comparisons both within and across projects.the (3) describes important information about project requirement that is considered during cost estimating.

空白（3）处填（）

A.project scope statement

B.statement of work

C.project management plan

D.projectpolicy
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