( )是指在一个建设工程项目中，具有独立的设计文件，竣工后可以独立发挥生产能力或效

阅读短文，判断正误，对的打T，错的打F。

     Her first name is Alice. Her last name is Jones. Her phone number is five-four-five, five-five-four-one.

His first name is Peter. His last name is Green. His phone number is seven-three-two, eight-six-nine-one.

( )1. Her name is Alice Jones.

(     )2. Her first name is Jones.

(     )3. His last name is Green.

(     )4. His phone number is 732-8691.

(     )5. Her phone number is 454-5541.

已经甲、乙两个方案投资收益率的期望值分别为10%和12%，两个方案都存在投资风险，在比较甲、乙两方案风险大小时应使用的指标是( )。

A．标准离差率

B．标准差

C．协方差

D．方差

呼吸衰竭伴CO₂潴留时下列变化哪项不正确（）.

A.肾保留碳酸氢盐

B.神志不清

C.颅压增高

D.脑血流量下降

E.呼吸性酸中毒

汇票

农业市场交易信息化包括农业（）信息化和交易过程信息化。

A.产销衔接

B.物流仓储

C.购销手段

D.交易场所