【判断题】
(32250)康明斯发电车1FC5356发电机若背包中的限流电阻R出现部份匝间短路，将造成发电机端电压偏低。(1.0分)
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【判断题】
(32251)康明斯发电车1FC5356发电机若L1的正常气隙一般为2～3mm，气隙越大，空载端电压越高。(1.0分)
【判断题】
(32252)环境温度小于0°C，需点燃燃油炉对机组进行预热；温度大于10°C以上时方可起机，不得低温启动。(1.0分)
【判断题】
(32253)断电延时与通电延时两种时间继电器的组成元件是通用的。(1.0分)
【判断题】
(32254)当发电机组的充磁、灭磁开关打到充磁位时，将造成发电机端电压低于400V。(1.0分)
【判断题】
(32255)康明斯发电车柴油机调速控制箱面板上，油温表、水温表的起始刻度分别为60、66。(1.0)
【判断题】
(32256)发电车启机发电前，机房内是没有电源照明的。(1.0分)
【判断题】
(32257)发电车机组在运行时，为了节约用电，机房照明灯可以不开。(1.0分)
【判断题】
(32258)康明斯柴油机每次启机前均需对PT泵前的油管进行排空气。(1.0分)
【判断题】
(32259)柴油机启机前进行试报警是为了提示周围的人注意即将启机了。(1.0分)
【判断题】
(32260)MTU柴油机启机后必须怠速3-5分钟才能进行高速运转。(1.0分)
【判断题】
(32261)柴油机低温启动困难主要是因为柴油机的机油温度过低。(1.0分)
【判断题】
(32262)冬季环境温度低，柴油机组运行时，可不必开启冷却风机对冷却水进行强制散热。(1.0分)
【判断题】
(32263)发电车输出的线电压保持在交流380V时，才能满足全列车所有负载的最佳电压。(1.0分)
【判断题】
(32264)在康明斯电子调速器调速板中，IDLE SPD旋钮是用来调整柴油机怠速的。(1.0分)
【判断题】
(32265)MTU12V183型柴油机启动后，其正常转速范围在1485～1515转/分钟。(1.0分)
【判断题】
(32266)MTU12V183型柴油机启动后正常运行时，其冷却水温范围在95～105℃。(1.0分)
【判断题】
(32267)当柴油机运行中，出现水温高于90℃报警时，应立即卸载停机。(1.0分)
【判断题】
(32268)当柴油机运行中，出现水温高于90℃报警时，如不及时处理，水温会继续升高，直至柴油机自动停机。(1.0分)
【判断题】
(32269)当柴油机供油管路出现堵塞时，会造成柴油机游车，甚至停机。(1.0分)
【判断题】
(32270)柴油机游车不一定是因供油管路堵塞，但供油管路堵塞较严重时，一定会引起柴油机游车。(1.0分)
【判断题】
(32271)列车在电气化铁路发生火灾时，在不足4m和未停电的情况下，可以使用水和一般的灭火器灭火。(1.0分)
【判断题】
(32272)发电车的机组均发生突然停机的原因只有缺油的可能。(1.0分)
【判断题】
(32273)发电车的机组运行中均发生突然停机，如果检查上油箱燃油量充足，应判断是直流24V控制电路出了问题。(1.0分)
【判断题】
(32274)康明斯KTA19-G2型柴油机有怠速无高速，一般是停车电磁阀缺电造成的。(1.0分)
【判断题】
(32275)康明斯KTA19-G2型柴油机如果因转速传感器出现故障，可造成柴油机有怠速无高速。(1.0)
【判断题】
(32276)冬季发电车下油箱柴油凝结时，可以向下油箱内加热水。(1.0分)
【判断题】
(32277)冬季发电车下油箱柴油可能出现凝结时，柴油牌号应选用凝固点比外温低5℃～10℃。(1.0)
【判断题】
(32278)发电车的机组在运行中出现上油箱至柴油机的供油管渗油时，立即关闭上箱至机组的总油阀。(1.0分)
【判断题】
(32279)发电车的机组在运行中出现膨胀水箱渗水时，立即关闭膨胀水箱至机组的总水阀。(1.0分)
【判断题】
(32280)发电车机组正常运行供电过程中，交流燃油泵不工作，将会引起发电车全列停电。(1.0分)
【判断题】
(32281)当燃油泵处于“手动位”时，只要上油箱油位足够低，燃油泵均会自动抽油工作。(1.0分)
【判断题】
(32282)发电车主干线短路，将造成全列车不能正常供电。(1.0分)
【判断题】
(32283)测量发电车主干线绝缘应采用直流1000V的兆欧表。(1.0分)
【判断题】
(32284)柴油机的油底壳主要是用来收集废机油的。(1.0分)
【判断题】
(32285)柴油机的机油温度就是测得油底壳里的机油温度。(1.0分)
【判断题】
(32286)V柴油机左、右两列气缸中，对应的左缸和右缸的两根连杆是装在一个曲柄销上的。(1.0)
【判断题】
(32287)V型柴油机并列连杆的结构形式不一样，动力性能也不一样，所以不能互换。(1.0分)
【判断题】
(32288)连杆大头的瓦盖内装有分开式的滑动轴承就是轴瓦。(1.0分)
【判断题】
(32289)柴油机的连杆大头内安装轴瓦主要是增加连杆大头的稳定性，不致于使连杆左右摆动。(1.0分)
【判断题】
(32290)直列六缸四冲程柴油机的发火顺序是按缸的排列顺序1—2—3—4—5—6依次点火。(1.0分)
推荐试题
【单选题】
When was the speaker’s first conscious memory of feeling different? ___
A. Fourth grade.
B. Fifth grade.
C. First grade.
D. Second grade.
【单选题】
Which is NOT included in the speaker’s inner world? ___
A. Reading books.
B. Writing.
C. Watching TV.
D. Daydreaming.
【单选题】
What does integrity mean? ___
A. You do what you do because it's fashionable.
B. You do what you do because it's politically correct.
C. You do what you do because it's right.
D. You do what you do because somebody asked you to.
【单选题】
Is there cheating in World Cup? ___
A. It's none.
B. It's rare.
C. It's some.
D. It's popular.
【单选题】
Which one of the following situations is NOT mentioned for making us upset? ___
A. Some reward we thought we deserved has been denied us.
B. Some man we helped has proved ungrateful.
C. Some man we believed to be a friend has betrayed us.
D. Some woman we believed to be a friend has spoken ill of us.
【单选题】
In which year the Tour of France was hit by a drug-taking scandal? ___
A. In 1996.
B. In 1997.
C. In 1998.
D. In 1999.
【单选题】
Cheap fake products are everywhere except ___
A. clothes.
B. cut-price DVDs.
C. cut-price CDs.
D. cosmetics.
【单选题】
What should we do after exercise? ___
A. Stretch the muscles.
B. Have a sleep.
C. Maintain high body temperature.
D. Take a shower.
【单选题】
What shouldn’t we wear when we exercise? ___
A. Properly fitted sportswear.
B. Well-fitted sneakers.
C. Tight pants.
D. Sports bra for women.
【单选题】
Which of the following is NOT good for health? ___
A. Training with a friend.
B. Slack off a fitness regimen.
C. Keep our body hydrated.
D. Take small sips every few minutes.
【单选题】
What does the speaker do? ___
A. Public relations consultant.
B. Home cook.
C. Website administrator.
D. Writer.
【单选题】
Which is NOT included in the speaker’s favorite breakfasts? ___
A. Egg.
B. Prosciutto.
C. Papaya.
D. Cabbage.
【单选题】
When do the students start learning Chinese? ___
A. Since kindergarten
B. Since elementary school
C. Since middle school
D. Since high school
【单选题】
When can the students continue studying Chinese? ___
A. In elementary school and middle school.
B. In middle school and high school.
C. In high school and university
D. After the university.
【单选题】
How many American students are currently learning Chinese? ___
A. About 22,000
B. About 24,000
C. About 44,000
D. About 2,400
【单选题】
How much did the Defense Department give Oregon schools? ___
A. $70,000
B. $1.3 million
C. $700,000
D. $1.3 billion
【单选题】
What’s Isabel Weiss’s purpose of learning Chinese? ___
A. For fun
B. For more opportunities for jobs
C. For more opportunities of making money
D. For more opportunities for promotions
【单选题】
What ability do the standardized tests reward to? ___
A. Think.
B. Create.
C. Quickly answer superficial questions.
D. Above all.
【单选题】
In what ways the IQ scores can be changed? ___
A. Training.
B. Nutrition.
C. More friendly people administered the test.
D. Above all
【单选题】
What do schools focus on? ___
A. Concepts.
B. Science.
C. Social Studies.
D. Foreign languages.
【单选题】
Why tests and standards are a necessary fact of life? ___
A. They protect us from hazardous products.
B. They protect us from inept drivers.
C. They protect us from shoddy professionals.
D. Above all.
【单选题】
How many percent did the scores on statewide tests rise? ___
A. 4%.
B. 14%.
C. 40%.
D. None.
【单选题】
What was the woman’s reaction when she was nominated? ___
A. She was surprised at the nomination.
B. She was calm at the nomination.
C. She was indifferent to the nomination.
D. She was scared of the nomination.
【单选题】
According to the woman, who paid for her trip to San Francisco? ___
A. Her trip to San Francisco was sponsored by the Academy.
B. Her trip to San Francisco was paid for by her company.
C. Her trip to San Francisco was paid for by her family.
D. Her trip to San Francisco was paid for by herself.
【单选题】
What is the name of George Miller’s new movie? ___
A. Happy Feeling.
B. Happy Dancing.
C. Happy Foot.
D. Happy Feet.
【单选题】
Which name is not mentioned in the film? ___
A. Nicole Kidman.
B. Hugh Jackman.
C. George Clooney.
D. Robin Williams.
【单选题】
Which of the following statement is not true about “Life in the Freezer”? ___
A. It was a documentary film.
B. It was made by National Geographic and the BBC.
C. It was a story of the amazing life of Emperor penguins.
D. The
E. mperor penguin sang to each other to find a mate and made friends.
【单选题】
What should you do during a high-pressure periods? ___
A. Lock yourself in a room with your work.
B. Leave your work and go on a vocation.
C. Tell your boss you can’t finish your work.
D. Get together with people who will revitalize and inspire you.
【单选题】
Which of the following is the correct description of TempWorld? ___
A. The era of guaranteed jobs is history.
B. We are all temporary workers.
C. You have to equip yourself with the skills.
D. All of the above.
【单选题】
What should a career activist do? ___
A. Being a career activist means concentrating on daily business.
B. Being a career activist means you can do a business as long as it meets your short-term needs.
C. A career activist should take the long view of his career.
D. A career activist should plan everything in advance.
【单选题】
What should you do in the TempWorld? ___
A. In TempWorld you must withstand disappointment, juggle stressful situations, and handle pressure.
B. You must learn from your setbacks and use them to your advantage in the future.
C. Things always go well for successful people because they are honest.
D. Both A and B.
【单选题】
Which of the following statements is Not True? ___
A. Your boss may be willing to change his behavior than your think.
B. Some managers don’t care how much their words or actions upset staffers.
C. You should tell your managers how their outbursts make you feel.
D. If the boss values your work, he may stop his abusiveness.
【单选题】
Which of the following public places is NOT mentioned that have banned mobiles? ___
A. restaurants
B. gas stations
C. theatres
D. museums
【单选题】
What happened when the cellphone of the speaker’s friend rang? ___
A. His friend answered the phone and the speaker became invisible to his friend.
B. They answered the phone together.
C. The speaker threw away his friend’s cellphone.
D. His friend hung up the phone and kept talking to the speaker. (C)
【单选题】
What happened to the man? ___
A. He had a car accident.
B. He had his arms broken.
C. He lost his mobile phone.
D. He was not able to use his mobile because he was in a remote area.
【单选题】
Which of the following is NOT true? ___
A. Today there are about 400 million cellphone owners.
B. Today there are about 300 million Personal Computer subscribers.
C. Cellphones will be more often used.
D. Cellphones will completely replace Personal Computers.
【单选题】
Which of the following is true? ___
A. Ellen Johnson-Sirleaf stayed in her country during the nation’s civil war.
B. She is still working for the United Nations.
C. She is the first woman ever elected president of an Asian country.
D. She is a Liberia.
【单选题】
What do you know about the solar eclipse? ___
A. Only hundreds of people gazed at it.
B. It was caused by the earth passing in front of the moon.
C. It was not often seen.
D. It started in Mongolia and ended in Brazil.
【单选题】
What is true about this meeting between the USA and China? ___
A. It was a meeting between Xi Jinping and Donald Trump.
B. It was the first time that the Chinese president had visited the United States.
C. The issue of the Olympics was discussed.
D. South Korea’s nuclear weapons program was discussed.
【单选题】
In which year did the station’s first permanent crew arrived? ___
A. 1998
B. 2000
C. 2002
D. 2003
