电机在正常运行时,如闻到焦臭味,则说明电动机速度过快。

[问答题]Directions:In this section, there is one passage followed by 5 questions. Read the passage carefully, then answer the questions in as few words as possible (not more than 10 words). Remember to write the answers on the Answer Sheet.　　Questions 1-5 are based on the following passage.　　Many people today are worried about bird flu. They are afraid that it will pass from birds to humans and that thousands of people will die in a pandemic. In 1918 a flu virus killed about 50 million people around the world. The virus was called Spanish influenza (or Spanish flu, for short) because Spanish newspapers first described the disease. Now, after nine years of work, scientists in an American laboratory in Atlanta, Georgia, have produced a copy of the Spanish flu virus. They are also going to publish the genetic sequence of the virus on the Internet and some experts are afraid that other laboratories could copy the virus.　　Scientists have copied the virus because they want to understand why the 1918 Spanish flu pandemic killed so many people. In a report in the journal Science, Dr. Jeffery Taubenberger and a team of scientists in the USA show that the copied virus is extremely powerful. The scientists injected the virus into mice and the mice began to lose weight very quickly. They lost 13% of their weight in two days and all of the mice died within six days.　　“I didn’t expect it to be as lethal as it was,”Dr. Terrence Tumpey, one of the scientists in the team, told the journal Nature. In another experiment, they injected more mice with a normal type of flu. The mice lost weight at first but then they got better and did not die. The experiments showed that the mice with the Spanish flu virus had 39,000 times more flu virus in their bodies than the second group of mice.　　The scientists who copied the virus say their work has already provided important information about the virus and helps to explain why it is so lethal. But other experts are worried that the virus could escape from the laboratory. “Some people will think that they have really created a biological weapon,” said Professor Ronald Atlas of the University of Louisville in Kentucky. “I am even more worried now than I was before about the possibility of a flu pandemic. The 1918 flu pandemic started with bird flu and that might happen again today with Asian bird flu.”　　Some scientists are worried about the publication of the genetic sequence on the Internet. They are afraid that biologists could copy the virus using the information on the Internet. This could be very dangerous.　　It took a long time to copy the virus. Scientists used material taken from the lungs of people who died from the flu virus in 1918. In a second report in Nature, Taubenberger and his colleagues analyzed the genetic make-up of the virus. They were surprised to find that it was completely different from all the normal human flu viruses. This probably means that Spanish flu jumped from birds to humans and did not mix with a human virus first. This is very worrying for scientists because in the past everyone believed that a pandemic was only possible if a bird flu virus mixed with a human flu virus.　　Taubenberger says it is very important to know what changes in the virus caused the 1918 Spanish flu virus. This will help scientists to work out which viruses might cause a pandemic. The H5N1 bird flu in Asia is already changing and it could infect humans, he said.　　Viruses have escaped from high-security labs before. The SARS virus escaped at least twice, once in Taiwan and once in Singapore. But some scientists believe a pandemic will not happen even if the virus escapes, because most people are naturally immune and there are now a lot of drugs which protect people from flu.　　Questions:　　1．When was the Spanish flu pandemic?　　2．How many people died in the Spanish flu pandemic?　　3．Where did the scientists produce a copy of the Spanish flu virus?　　4．How quickly did the laboratory mice die?　　5．What is H5N1?

[判断题]结余资金是指当年预算已执行但未完成，或者因故未执行，下一年度需要按照原用途继续使用的资金。

[单选题]中年男性患者，慢性起病，一年来双下肢行走困难逐渐加重伴排尿费力。查体：脑神经和上肢正常，双下肢肌力3～4级，左侧重于右侧；剑突下痛、温觉明显减退，双下肢深感觉减退，膝和跟腱反射亢进，双侧病理征阳性。腰椎穿刺脑脊液呈淡黄色，压颈试验上升下降均缓慢。蛋白质含量1.05g/L，余正常，该患者的可能诊断（）

[单选题]19世纪六七十年代，中国民族资本主义工业兴起的条件有（）①外商企业利润的刺激②洋务运动的诱导③实业救国思潮的推动④政府提倡与鼓励

[单选题]下列关于幼儿教师对幼儿的态度与行为的说法，错误的是()。

[单选题]在VisualFoxPro中，打开数据库的命令是（）。

[单选题]对文中画线句子的意思理解得最准确的一项是（　　）。

[填空题]废除Session的语句是：（）

[多选题]从监管级别看，商业银行风险监管与管理指标分为（  ）。

[单选题]在伏生多少岁的时候还在齐鲁之间传播《尚书》？（）

露天矿加油安全生产知识

露天矿流动加油车安全操作规程

露天矿加油站(点)安全管理制度

露天矿加油站作业人员安全管理制度

[判断题]电机在正常运行时,如闻到焦臭味,则说明电动机速度过快。

[填空题]为了防止因阀门不严密发生漏氢气或漏空气而引起爆炸，当发电机为（）运行时，补充空气的管路必须隔断，并加严密的堵板。当发电机为（）运行时，补充氢气的管路也应隔断，并...

[单选题]主机配有轴带发电机时结论正确的是（）。 a．轴带发电机运行时桨特性线变陡； b．轴带发电机运行时桨特性线不变； c．轴带发电机运行时主机功率增大。

[单选题]主机配有轴带发电机时结论正确的是（）。 a．轴带发电机运行时桨特性线变陡； b．轴带发电机运行时桨特性线不变； c．轴带发电机运行时主机功率增大。

[多选题]电机在正常运行时应做到（）。

[问答题]发电机进相运行时应注意什么？为什么？

[填空题]正常运行时发电机定子线圈温度不应超过（），最高不得超过（）。发电机转子线圈温度不应超过（），最高不得超过（）。

[填空题]同步发电机与电网并联运行时应当避免在发电机与电网组成的回路中产生（）。

[问答题]何谓发电机进相运行？发电机进相运行时应注意什么？为什么？

[判断题]两台发电机并联运行时，当负荷减低至40%以下时，手动操作一台发电机解列，可以直接分闸、停机完成解列。