现有A、B两个长期投资方案，其初始投资额分别是10万元和20万元，项目有效期分别为5年和10年，每年现金净流量分别为4万元和5万元。假设两个投资项目均在投资当年一次投入完工并产生经济效益，资金成本均为12%，项目结束时均无残值。则决策者（）。
A．应选择A方案
B．A、B方案均不可行
C．A、B方案均可行，可任选其一
D．应选择B方案
参考答案：A
| 阅读短文，选择正确答案。 | |
They also put on their running shoes. After they help their mother do the housework around the house, they put bread, meat, eggs and some fruit in a basket and carry it to the car. Mrs Smith also takes four tins of coke with her. The little dog is running after her. It wants to go with them, too. They are all very happy. | |
| 1. On Sundays the Smiths like ______________. | |
[ ] | |
| A. to stay at home B. to watch TV C. to go out for a trip D. to do some shopping | |
| 2. Jack and Alice wear ______________. | |
[ ] | |
| A. jeans, skirt and running shoes B. coats and trousers C. jackets and jeans D. jackets and coats | |
| 3. They take ______________ with them. | |
[ ] | |
| A. some apples and oranges B. some bananas and pears C. some bread, meat, eggs, fruit and coke D. some food and books | |
| 4. They can have _____________ each. | |
[ ] | |
| A. two tins of coke B. a tin of coke C. four tins of coke D. three tins of coke | |
| 5. ____________ running after Mrs Smith. | |
[ ] | |
| A. The little cat B. The little dog C. The beautiful girl D. The boy |