在项目投资假设条件下,下列各项中不属于项目投资现金流出量的是()
A、借款利息
B、垫支流动资金
C、经营成本
D、归还借款的年金
参考答案:A, D
_______ the classroom, the teacher found all the parents already______ there. [ ]
A. Entered; seated
B. Entering; seating
C. Entered; seating
D. Entering; seated
定轨道根数最少的观测次数是()
A、9.0
B、6.0
C、3.0
D、7.0