问题 单项选择题

三峡工程是治理和开发长江的关键性骨干工程,建成后水库正常蓄水位175米,总库容393亿立方米,具有防洪、发电、航运等巨大的综合效益。工程分为大坝、电站、通航建筑物等几个主要部分。大坝全长2309米,坝顶高185米。电站设有左、右两组共26台单机额定容量为70万千瓦的大型水轮发电机组。通航建筑物包括双线五级船闸和垂直升船机,分别可通过万吨级船队和3000吨级客货轮。2003年和2005年,国务院三峡工程建设委员会又先后批准建设电源电站和右岸地下电站,三峡工程总装机容量达到2250万千瓦,年发电量约880亿千瓦时,主要供应华中和华东地区。
其工程建设分为三个阶段:第一阶段从1993年至1997年,完成了大江截流。第二阶段从1998年至2003年,先后建成主坝、左岸电站和永久船闸,按期实现水库初期蓄水、首批6台机组发电和通航三大目标。第三阶段从2004年至2009年,以实现工程基本完工和全面运营为标志。2006年,大坝全线达到185米设计高程,水库蓄水至156米水位目标。
截至2005年底,中国长江三峡工程开发总公司累计筹集建设资金1220.31亿元(含移民工程),包括:国家拨入资本金623.22亿元,其中三峡工程建设基金621.38亿元;债务性资金413.97亿元(主要是国家开发银行贷款和三峡企业债券);发电及出售机组收入等183.12亿元。三峡工程累计完成动态投资642亿元(不含移民工程),完成静态投资425.85亿元,占静态总投资500.9亿元的85%。至2009年三峡工程基本竣工(除右岸地下电站和垂直升船机外),尚需投资约140亿元,静态总投资可控制在概算确定的500.9亿元内,预计动态总投资为780多亿元,比1994年预测总投资减少350多亿元。

2006年,三峡水库蓄水位达到正常蓄水位的( )。

A.84.3%

B.82.0%

C.89.1%

D.83.4%

答案

参考答案:C

解析: 由“建成后水库正常蓄水位175米”,“2006年水库蓄水至156米水位目标”可得156÷175≈0.891,注意不是156÷185≈0.843。

填空题
填空题

Work/life balance was the buzz phrase of the late 1990s. Apparently too many people who were cash rich and time poor were becoming fed up with the long hours culture and wanted more balance in their life. For students, the issue is not work/life balance but work/study balance.
With ever increasing fees, working while studying is the norm for many students. Faced with potentially huge debts, some students may be tempted to take part time jobs that involve working lots of hours, but this may have a detrimental impact on their studies.
University is more than just about getting a degree: extracurricular activities and a social life are also important. How can students balance studying with working part-time and also ensure that they do not miss out on university life
Develop a study plan
Once you have your timetable, and an idea of when your assignments are due, develop a plan of the best times for you to study, whether this be evenings, mornings or weekends. This will help you determine which hours and days you can work.
41. Choose a job that is flexible
You may need time off from your job during exams or if you have deadlines for coursework, so choosing the right job, where the employer is understanding and willing to be flexible, is important.
You can mention this at interview, but Brian Staines of Bristol University Careers Office says: "It may be better to wait until you have been offered the job, have worked for a while, and have had the opportunity to prove yourself before mentioning that you might need time off. "
42. Choose a job that fits in with your study pattern
Working out your study pattern, i. e. whether you’re at your best in the mornings, evenings or late. Some students are night owls preferring to study late at night, others are larks.
43. Don’t take a job that’s too demanding
The type of job you look for will depend on your skill set. Apart from the usual student-type jobs, there are roles in offices which can be done at weekends and evenings-jobs such as being a presentation operator using PowerPoint or even evening and weekend secretarial work.
44.Be industrious in your search for work
There may be part-time jobs available in call centers or as photocopy clerks in banks and law firms.
45.Know your limits
There isn’t a figure for the maximum number of hours that students can work before it impacts negatively on their studies since this will vary from student to student.
However, Brian Staines says: "At Bristol, we believe that if students work more than 12 hours a week during term time, this could have a negative effect on their studies. We have a job shop at Bristol offering part-time jobs and all the jobs are a maximum of 12 hours. "
Balancing part-time work with studying is a challenge that more and more students will face.
"A part time job, which involves long hours, may help their finance in the short term but could have a negative impact on long-term job prospects if they don’t get a good degree, "adds Brian.
[A] "When you look for a job, it’s best to start with working a few hours and then once you get used to the job and know how much you can cope with, you can increase the hours. It’s always easier to increase rather than decrease the number of hours you work," says Cary Cooper, professor of psychology and health at Lancaster University Management School.
[B] There may even be jobs in security, which give you the opportunity to study "on the job", perhaps on sit at an unoccupied building, so it’s a good idea to cast the net a bit wider when looking for part-time work.
[C] Although these jobs pay well, it may be a challenge to balance studying with these types of job. "A job develping PowerPoint presentations may be too mentally demanding and tiring because you will be looking at a screen most of the time, "says Cary.
[D] "If students for example work 20 hours a week, then their work could suffer unless they are incredibly disciplined," he explains, "Also university is about more than just studying. Social time and extracurricular activities are also important."
[E] Relaxation is also very important.
[F] Some students may prefer to work a few evenings a week, others at weekends. "Although work is important, they need to find a job with hours that fit around their optimal times for studying rather than the other way round, "says Professor Cooper.