[判断题]2.38.第38题微机保护装置应具有独立的DC/DC变换器供内部回路使用的电源。拉、合装置直流电源或直流电压缓慢下降及上升时,装置不应误动作。直流消失时,应有输出触点以起动告警信号。直流电源恢复(包括缓慢恢复)时
,变换器应能自起动。
A.正确
B.错误

British universities, groaning under the burden of a huge increase in student numbers, are warning that the tradition of a free education is at risk. The universities have threatened to impose an admission fee on students to plug a gap in revenue if the government does not act to improve their finances and scrap some public spending cut- backs.
The government responded to the universities’ threat by setting up the most fundamental review of higher education for a generation, under a non-party troubleshooter (调停人), Sir Ron Dearing.
One in three school-leavers enters higher education, five times the number when the last review took place thirty years ago.
Everyone agrees a system that is feeling the strain after rapid expansion needs a lot more money -- but. there is little hope of getting it from the taxpayer and not much scope for attracting more finance from business.
Most colleges believe students should contribute to tuition costs , someth
A. 20% or so.
B. About 15%.
C. Above 30%.
D. Below 10%.

企业建立并实施职业健康安全与环境管理体系，是建设工程项目管理的一项主要内容，是强化企业管理的需要，也是体现企业管理现代化的重要标志。

Can animals be made to work for us Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings.
They point out that at a circus, for example, we may see elephants, monkeys, dogs and other animals doing quite skillful things. Perhaps you have seen them on the television or in a film. If you watch closely, you may notice that the trainer always gives the animal a piece of candy or a piece of fruit as a reward. The scientists say that many different animals may be trained to do a number of simple jobs if they know they will get a reward for doing them.
Of course, as we know, dogs can be used to guard a house, and soldiers in both old and modern times have used geese to give warning by making a lot of noise when a stranger or an enemy comes near. But it may be possible to train animals to work in factories. In Russia, for example, pigeons which are birds with good eyesight, are being used to watch out for f
A. when it is hungry
B. before it plays a trick
C. when it starts to play a trick
D. after it has done the trick