作为编制项目建议书、可行性研究报告投资估算依据的是（）

A.估算指标

B.概算定额

C.预算定额

D.人工消耗定额

A company’s personnel director surveyed employees about their satisfaction with the company’s system for awarding employee performance ratings. The survey data indicated that employees who received high ratings were every satisfied with the system. The personnel director concluded from these data that the company’s best-performing employees liked the system.
The personnel director’s conclusion assumes which of the following

A．No other performance rating system is as good as the current system.

B．The company’s best-performing employees received high ratings.

C．Employees who received low ratings were dissatisfied with the system.

D．Employees who, receive high ratings from a performancerating system will like that system.

E．(E) The company’s best-performing employees were motivated to perform well by the knowledge that they would receive performance ratings.