在委托管理模式中，项目管理咨询单位提供项目管理服务，其工作性质是( )。A．承包

The World Trade Organization was founded in 1995. It absorbed the General Agreement on Tariffs and Trade (GATT), which covers trade in manufactured and agricultural goods. The WTO also regulates trade in services and in intellectual property, which includes such creations (作品)as books, computer softwares, and recordings.

The WTO is one of three major organizations that oversee (监督)international economic relations among governments. The other two are the International Monetary Fund (国际货币基金会), which works to improve payment arrangements and other financial dealings between countries, and the World Bank, which provides loans to poorer nations for economic development. WTO headquarters are in Geneva, Switzerland.

1) The World Trade Organization was founded in (46) .

2) The GATT covers trade in (47) goods.

3) The WTO is one of three major organizations. The other two are the (48) and (49) .

4) WTO headquarters are in (50) , Switzerland.

47（）

0.02mol·L^-1的HCN溶液与0.02mol·L^-1的NaCN溶液等体积混合，已知混合溶液中c(CN^-)＜c(Na⁺)，则下列关系中，正确的是[ ]

A．c(Na⁺)＞c(CN^-)＞c(H⁺)＞c(OH^-)

B．c(HCN)+c(CN^-)=0.04mol·L^-1

C．c(Na⁺)+c(H⁺)=c(CN^-)+c(OH^-)

D．c(CN^-)＞c(HCN)

简述信息资料鉴别的具体方法。

配电变压器并列运行其容量比不得超过（）。

A.3：1

B.4：1

C.5：1

D.6：1

均徭