Are these friends Japanese?_____.[ ] A.

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问题选择题

Are these friends Japanese? _____.[ ]

A. Yes, these are

B. No, they aren't

C. Yes, they aren't

D. No, these aren't

答案

答案：B

填空题

根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。

It was a very cold morning. Some children were 1 on the ice. It was snowing 2 , but they

enjoyed 3 there. Mike, a tall boy, skated fast and he didn't see that there was a 4 in the ice. He

5 into the water. The other children called out 6 for help. Just then, a young man 7 quickly.

He 8 into the water without 9 off his clothes. Mike was 10 .

问答题

某市修建一条快速干线，初步拟定两条备选路线，即沿河路线与穿山路线，两条路线的平均车速都提高了50 km/h，日平均流量都是6000辆，寿命均为30年，且无残值，基准收益率为12%，其他数据见表2-1。

已知(P/F，12%，10)=0.3220，(P/F，12%，20)=0.1037，(A/P，12%，30)=0.1241。

问题：

试用生命周期费用理论分析两条路线的优劣，并作出方案选择(计算结果保留两位小数)。