问题 问答题

某市为改善越江交通状况,提出以下两个方案。

方案1:在原桥基础上加固、扩建。该方案预计投资40000万元,建成后可通行20年。这期间每年需维护费1000万元。每10年需进行一次大修,每次大修费用为3000万元,运营20年后报废时没有残值。

方案2:拆除原桥,在原址建一座新桥。该方案预计投资120000万元,建成后可通行60年。这期间每年需维护费1500万元。每20年需进行一次大修,每次大修费用为5000万元,运营60年后报废时可回收残值5000万元。

不考虑两方案建设期的差异,基准收益率为6%。

主管部门聘请专家对该桥应具备的功能进行了深入分析,认为应从F1、F2、F3、F4、F5共五个方面对功能进行评价。表2-1是专家采用0—4评分方法对5个功能进行评分的部分结果,表2-2是专家对两个方案的5个功能的评分结果。

问题

列式计算两方案的年费用(计算结果保留两位小数)。

答案

参考答案:

方案1的年费用=1000+40000(A/P,6%,20)+3000(P/F,6%,10)(A/P,6%,20)=1000+40000×0.0872+3000×0.5584×0.0872=4634.08(万元)。

方案2的年费用=1500+120000(A/P,6%,60)+5000(P/F,6%,20)(A/P,6%,60)+5000(P/F,6%,40)(A/P,6%,60)-5000(P/F,6%,60)(A/P,6%,60)=1500+120000×0.0619+5000×0.3118×0.0619+5000×0.0972×0.0619-5000×0.0303×0.0619=9045.21(万元)。

完形填空
阅读下面短文,掌握其大意,然后从下列各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
I was in a department store with my mom, aunt, and my sister a few days ago.   61 , I am one of those people who do not like to go shopping with my family. However, I decided this time to   62  them.
My aunt and I were   63 for some things to buy for our family when I noticed two   64 on the side. One of them had a little girl sitting on it with her  65 nearby and the other one was  66 . So, I decided to sit down. While I was   67 my own thing there, I  68 that the family were not in front of the   69 anymore. I saw the girl  70 and look around for her family. She came back and I saw her in  71 , crying.
I knew that she  72 her family and was all by herself . Now, I am sure that almost everybody has been lost in a department store or   73 big before and we all know that feeling.   74 I went up to her and asked what was   75 and in between tears she told me she was lost. I   76 her a smile card I just bought. You should have seen the  77  on her face when she read it. Then I went up to customer service center and  78 them what happened. People there promised to  79 her. After I left, the little girl’s parents went there and I could see them looking around for the person who had found their daughter and given her the   80 . Little did they know it was a regular teenager who did it.
小题1:
A.LuckilyB.UsuallyC.SadlyD.Surprisingly
小题2:
A.helpB.encourageC.joinD.support
小题3:
A.answeringB.lookingC.preparingD.calling
小题4:
A.chairsB.childrenC.signsD.toys
小题5:
A.friendsB.bookC.familyD.bags
小题6:
A.cleanB.largeC.emptyD.beautiful
小题7:
A.studyingB.carryingC.buyingD.doing
小题8:
A.noticedB.believedC.doubtedD.understood
小题9:
A.shopB.giftC.girlD.lady
小题10:
A.get upB.come upC.give upD.make up
小题11:
A.returnB.detailC.vainD.tears
小题12:
A.hatedB.raisedC.lostD.lived
小题13:
A.somewhereB.somethingC.everywhereD.everything
小题14:
A.IfB.AsC.SoD.Or
小题15:
A.importantB.wrongC.strangeD.different
小题16:
A.lentB.gaveC.sentD.posted
小题17:
A.smileB.hopeC.puzzleD.worry
小题18:
A.remindedB.warnedC.askedD.told
小题19:
A.look out forB.take care ofC.wait forD.call up
小题20:
A.courageB.moneyC.explanationD.card
单项选择题