* * 损伤术后留置尿管的时间是（） A.3~5天 B.2~4周 C.1~2周 D.2~

根据《合同法》的规定，协作履行原则与全面履行原则同为合同履行之中( )原则的内涵。

A．公平
B．公正
C．公开
D．诚实信用

书店有一套科普丛书原价96元，现按6折出售，买一套可以便宜多少元？如果买6套，360元钱够吗？

尿液一般检查应留取

A．2小时尿

B．4小时尿

C．上午的尿液

D．晨尿

E．任何时间内的尿液

----Carol Walker didn’t turn up last time ,did she ?

----No .She _______.We had changed our plan .

A．shouldn’t have come

B．needn’t have to come

C．didn’t need to come

D．needn’t have come

You are looking at the following data. Project A has a CPI of 0.8 and SPI of 1.2 and EV of 450. Project B has CPI of 1.2 and SPI of 0.8 and EV of 650. Which of the following statement is true ？（）

A．Project B is performing better because it has a higher earned value

B．Project A has schedule slippage and project B is ahead of schedule

C．Crashing project A is a good option

D．Crashing project B is a good option