按要求改写句子。

1. There are some televisions in the room. (改为否定句)

    There ____    ___ televisions in the room.

2. Yesterday I watched TV with my friends. (改为否定句)

    Yesterday I ____         TV with my friends.

3. We lived in a small house many years ago. (改为一般疑问句)

                      in a small house many years ago?

4. There is a bus in the station. (改为复数句)

    There____              in the station.

5. We have got lots of food. (对画线部分提问)

    ___        _                  got?

某大型物资管理部门打算实行仓库物流的自动化，可实施的方案有两个，这两个方案都可以达到仓库物流自动化的目标。但是，两方案初期投资额、年作业费用及寿命期不同(如下表所示)。基准收益率为12%。

已知

(P/A，12%，7)=4.564

(P/A，12%，13)=6.424

(A/F，12%，7)=0.09912

(A/F，12%，13)=0.03568

根据题意，回答下列问题：

若B方案的净残值为100万元，则8方案的费用年值为()万元。

A.72.47

B.75.45

C.79.6l

D.84.66