当泵站的工作压力为31、5Mpa时,乳化液箱蓄能器气体最低压力应为()。A、22.7

题型:单项选择题

问题:

当泵站的工作压力为31、5Mpa时,乳化液箱蓄能器气体最低压力应为()。

A、22.7Mpa

B、7Mpa

C、7.88Mpa

D、7.5Mpa

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题型:单项选择题

动火作业区域()范围内必须设臵至少两具适用的灭火器。

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某知名啤酒生产企业,为满足市场需求,不断研发啤酒新品种,开发适合不同顾客群体的啤酒,走差异化战略道路。今年该企业在市场调研的基础上,推出一款专门针对年轻人口味的啤酒。生产该品种啤酒年固定成本为600万元,单位变动成本为2.5元,产品售价为4元/瓶。该企业采用盈亏平衡点法进行产量决策。同时,在战略实施的进程中,管理人员及时比较、分析实际绩效与目标的差距,并据此采取恰当的控制行动。

该企业生产该品种啤酒的盈亏平衡点产量为()万瓶。

A.90

B.150

C.240

D.400

题型:单项选择题

阅读理解。

     The Homeless World Cup is an international football event, where teams made up entirely of people who

are homeless compete. The event has been held annually since 2003.

     It was at the end of 2001 that Mel Young, a famous expert in the media industry, came up with the idea

of the Homeless World Cup. 18 months later the first event took place in Austria. It was such a success that

people decided to do more.

     There are some interesting and special rules of the event. For example, players (male or female at least

16 years old) must have been homeless at some time after the previous year's World Cup or make their main

living income by selling newspapers in the street or be asylum (政治避难) seekers. Anyone can take part,

regardless of his or her abilities.

     There are at most 4 players per team to compete in the field. Games are 14 minutes long.

     In 2007, 48 nations, 500 players took a once-in-a-lifetime opportunity to represent their countries for true

spirit and glory in Copenhagen, Denmark. The winner in 2007 was Scotland. The 2008 Homeless World Cup

took place in Melbourne, Australia. And in 2009 it was held in Milan. The latest Homeless World Cup was

held in Rio de Janeiro, Brazil in September 2010. Paris 2011 Homeless World Cup takes place August followed

by the Mexico City 2012 Homeless World Cup.

     The success of the competition has been in two aspects-to attract the world's attention to the problems of

homelessness and also to help participants live a better life.

     According to a survey by the Homeless World Cup Organization after 2006 Homeless World Cup, 92% of

the players had a new motivation for life, 93 players successfully got rid of their dependency on drugs and

alcohol, 44% improved their housing situation and 72% continued to play football.

1. According to the passage, which of the following is TRUE?

A. The first Homeless World Cup took place in 2003.

B. The Homeless World Cup was held every other year.

C. The host country of the 9th Homeless World Cup was Australia.

D. Anyone who is homeless can take part in the Homeless World Cup.

2. The aim of the Homeless World Cup is to _____.

A. promote the cause of football

B. help the homeless live a better life

C. draw attention to those living in poverty

D. call on homeless people to unite and compete for honor

3. What can we learn from the last paragraph?

A. Most players moved out of poverty.

B. Homeless players became professional footballers.

C. 93% of the players were independent of drugs and alcohol.

D. The Homeless World Cup helped homeless people change their lives.

4. What would be the best title for this passage?

A. To End Homelessness

B. Football For Everyone

C. Hope For The Homeless

D. Beating Homelessness Through Football

题型:单项选择题

什么是光纤的色散?

题型:单项选择题

测得某土壤的阳离子交换量为50cmol(+)/kg,交换性盐基离子钙镁钾钠离子的含量分别为10、5、15、5cmol(+)/kg。则该土壤盐基饱和度为()

A.20%

B.40%

C.50%

D.60%

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