海船船员考试

单选题A loud clicking noise from the valve compartment of an operating diesel engine would indicate()A worn valve seatsB worn main bearingC excessive valve clearanceD weak rocker arm springs

题目
单选题
A loud clicking noise from the valve compartment of an operating diesel engine would indicate()
A

worn valve seats

B

worn main bearing

C

excessive valve clearance

D

weak rocker arm springs

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相似问题和答案

第1题:

Care should be taken to decrease the length of time that one is subjected( )loud continuous noise.
to


答案:
解析:
be subjected to“遭受……”。句意:人们应注意减少受强烈持续噪音影响的时间。

第2题:

共用题干
Can Loud Music Cause Hearing Impairment(损伤)?

Have you ever gone to a concert and realized that your seats were right next to the
booming speakers?Are you guilty_________(1)turning up the volume on your portable
cassette or CD player to drown out the whining(哭哭啼啼)of your little brother?
Sometimes it's difficult to avoid loud music or noises,but they can be bad news because
loud noises can_________(2)temporary or permanent hearing loss.
Extremely loud music and noises that go on for long periods of_______(3)are
common causes of deafness.If a noise is so loud that you have to shout to make yourself
_______(4),there is a______(5)that the mechanism inside your ear can be
injured.
Temporary hearing loss can happen after you've been_______(6)to loud noise
for only 15 minutes.If you have temporary hearing loss,you won't be able to hear as
________ (7) as you normally can, and you may have tinnitus(耳鸣),which is a
fancy word for ringing in the ears. Your ears can feel"full",too._________(8),
these things usually go away and your hearing soon returns to normal.
Permanent hearing loss can happen when someone is exposed to loud noise
________(9)and over. Construction workers and people who work in factories must
________(10)ear protectors because the equipment they use can be extremely loud.
But even some lawn mowers(割草机)and power tools can permanently__________
(11)a person's ability to hear high-pitched noises and can also give him permanent tinnitus.
Listening to extremely loud music over and over can also have the same effect on a person's
______(12).And using headphones on a portable cassette or CD player can be
dangerous________(13)if the volume is too high and the headphones are used a lot,
the noise can damage the ears.
The best way to avoid hearing loss is to wear ear protectors when working with
machinery and earplugs when going to a_________(14).Headphones are OK to wear
when you're listening to music;just be sure the volume isn't too high,and give them a rest
________(15)once in a while.

_________(8.)
A: Unfortunately
B: Accordingly
C: Luckily
D: Unexpectedly

答案:C
解析:

第3题:

Alex, a student from Australia, is very ___________ on Beijing opera.

A.fond

B.concerned

C.keen

D.interested


参考答案:C;

第4题:

共用题干
Music and Driving
Listening to loud music while driving can seriously hamper reaction times and cause accidents,new research suggests.
A Canadian study found people took up to 20% longer to perform physical and mental tasks to loud music .If motorists were delayed that long at the wheel they could suffer a fatal crash, warned the RAG Foundation,a British motoring organization.Edmund King,the RAC
Foundation's executive director,said the study showed that"not only is loud music a nuisance to other,it could also be the cause of accidents".
Earlier research by the RAG Foundation found drivers were twice as likely to skip a red light while listening to music.In the Canadian study volunteers carried out tasks while listening to levels of noise varying from 53 decibels(equivalent to an office environment)to 95 decibels(equivalent to an oil rig).Researchers found reactions to be significantly decreased at higher noise levels for both physical and mental work.At 95 decibels reaction times to tasks that involve decision making plummeted(骤然减少)by 20%.Edmund King said:" The findings of the Canadian study are bad news for decibel-loving drivers,as they prove that not only is loud music a nuisance to others,it could also be the cause of accidents on the roads."Drivers are at even greater risk if they listen to music with a pounding beat rather than more relaxed tunes,according to experts.
Conrad King,consultant psychologist to the foundation,said:"It is important that drivers choose their music carefully when driving,as up-tempo music has been shown to cause drivers to have double the amount of accidents as those listening to slower music."In general,if music is ahove 60 beats per minute,listeners experience a faster rate and increased blood pressure."It doesn't matter if you listen to opera,classical or the latest rave music.It's the speed of the beat that counts."

It can be concluded that speed of the beat is the most important criterion when choosing the music for a driver.
A: Right
B: Wrong
C: Not mentioned

答案:A
解析:
本题给出的信息是正确的。在文章第二段第一句话中提到“... people took up to 20% longer to perform physical and mental tasks to loud music.”由此可见,只要听着声音较大的音乐,无论是进行体力劳动还是脑力劳动大约都会多花费20%的时间。


本题给出的信息是错误的。在文章第二段最后一句话中提到了埃德蒙·金的观点" not only is loud music a nuisance to others , it could also be the cause of accidents",由此可见,吵闹的音乐不光会影响到别人,还会导致车祸,所以他并不认为大声的音乐时驾驶员没有害处。


文章没有谈到这方面的信息。文章中只在最后一段提到“if music is above 60 beats per minute , listeners experience a faster heart rate and increased blood pressure.”如果每分钟音乐的节拍超过60下,听者就会感到心跳加速和血压增高。全文没有任何地方提到了喧闹的音乐是否会造成心脏病发作。


本题给出的信息是错误的。在第三段中提到:" At 95 decibels reaction times to tasks that involve decision making plummeted by 20% .”。只要抓住这一细节,即可得出答案。由这句话可以知道,减少的幅度是20%而不是53%。


文章没有谈到这方面的信息。全文完全没有提到爵士乐这种音乐形式,只提到了节奏感较强以及较为轻松的音乐。


本题给出的信息是正确的。文章最后一段开头就提到了康拉德·金,他说:" It is important that drivers choose their music carefully when driving.”并指出了需要慎重选择音乐的原因。


本题给出的信息是正确的。文章最后一句话指出:" It's the speed of the beat thatcounts.”这里count意思是“重要”,所以我们很容易得出结论,音乐节拍的速度是一个重要的衡量标准。

第5题:

共用题干
Music and Driving
Listening to loud music while driving can seriously hamper reaction times and cause accidents,new research suggests.
A Canadian study found people took up to 20% longer to perform physical and mental tasks to loud music .If motorists were delayed that long at the wheel they could suffer a fatal crash, warned the RAG Foundation,a British motoring organization.Edmund King,the RAC
Foundation's executive director,said the study showed that"not only is loud music a nuisance to other,it could also be the cause of accidents".
Earlier research by the RAG Foundation found drivers were twice as likely to skip a red light while listening to music.In the Canadian study volunteers carried out tasks while listening to levels of noise varying from 53 decibels(equivalent to an office environment)to 95 decibels(equivalent to an oil rig).Researchers found reactions to be significantly decreased at higher noise levels for both physical and mental work.At 95 decibels reaction times to tasks that involve decision making plummeted(骤然减少)by 20%.Edmund King said:" The findings of the Canadian study are bad news for decibel-loving drivers,as they prove that not only is loud music a nuisance to others,it could also be the cause of accidents on the roads."Drivers are at even greater risk if they listen to music with a pounding beat rather than more relaxed tunes,according to experts.
Conrad King,consultant psychologist to the foundation,said:"It is important that drivers choose their music carefully when driving,as up-tempo music has been shown to cause drivers to have double the amount of accidents as those listening to slower music."In general,if music is ahove 60 beats per minute,listeners experience a faster rate and increased blood pressure."It doesn't matter if you listen to opera,classical or the latest rave music.It's the speed of the beat that counts."

Edmund King believes that loud music will do no harm to drivers.
A: Right
B: Wrong
C: Not mentioned

答案:B
解析:
本题给出的信息是正确的。在文章第二段第一句话中提到“... people took up to 20% longer to perform physical and mental tasks to loud music.”由此可见,只要听着声音较大的音乐,无论是进行体力劳动还是脑力劳动大约都会多花费20%的时间。


本题给出的信息是错误的。在文章第二段最后一句话中提到了埃德蒙·金的观点" not only is loud music a nuisance to others , it could also be the cause of accidents",由此可见,吵闹的音乐不光会影响到别人,还会导致车祸,所以他并不认为大声的音乐时驾驶员没有害处。


文章没有谈到这方面的信息。文章中只在最后一段提到“if music is above 60 beats per minute , listeners experience a faster heart rate and increased blood pressure.”如果每分钟音乐的节拍超过60下,听者就会感到心跳加速和血压增高。全文没有任何地方提到了喧闹的音乐是否会造成心脏病发作。


本题给出的信息是错误的。在第三段中提到:" At 95 decibels reaction times to tasks that involve decision making plummeted by 20% .”。只要抓住这一细节,即可得出答案。由这句话可以知道,减少的幅度是20%而不是53%。


文章没有谈到这方面的信息。全文完全没有提到爵士乐这种音乐形式,只提到了节奏感较强以及较为轻松的音乐。


本题给出的信息是正确的。文章最后一段开头就提到了康拉德·金,他说:" It is important that drivers choose their music carefully when driving.”并指出了需要慎重选择音乐的原因。


本题给出的信息是正确的。文章最后一句话指出:" It's the speed of the beat thatcounts.”这里count意思是“重要”,所以我们很容易得出结论,音乐节拍的速度是一个重要的衡量标准。

第6题:

Where did the noise come from? __________

A.From the small house
B.From Mrs.Janes
C.From the tyres
D.From the engine

答案:B
解析:
第二段“She Was singing some of her highest and most difficult tones at that time and as thecar passed”.可推知司机昕到的声音是Mrs.Janes练高音符发出的声音。故答案为B。

第7题:

共用题干
Music and Driving
Listening to loud music while driving can seriously hamper reaction times and cause accidents,new research suggests.
A Canadian study found people took up to 20% longer to perform physical and mental tasks to loud music .If motorists were delayed that long at the wheel they could suffer a fatal crash, warned the RAG Foundation,a British motoring organization.Edmund King,the RAC
Foundation's executive director,said the study showed that"not only is loud music a nuisance to other,it could also be the cause of accidents".
Earlier research by the RAG Foundation found drivers were twice as likely to skip a red light while listening to music.In the Canadian study volunteers carried out tasks while listening to levels of noise varying from 53 decibels(equivalent to an office environment)to 95 decibels(equivalent to an oil rig).Researchers found reactions to be significantly decreased at higher noise levels for both physical and mental work.At 95 decibels reaction times to tasks that involve decision making plummeted(骤然减少)by 20%.Edmund King said:" The findings of the Canadian study are bad news for decibel-loving drivers,as they prove that not only is loud music a nuisance to others,it could also be the cause of accidents on the roads."Drivers are at even greater risk if they listen to music with a pounding beat rather than more relaxed tunes,according to experts.
Conrad King,consultant psychologist to the foundation,said:"It is important that drivers choose their music carefully when driving,as up-tempo music has been shown to cause drivers to have double the amount of accidents as those listening to slower music."In general,if music is ahove 60 beats per minute,listeners experience a faster rate and increased blood pressure."It doesn't matter if you listen to opera,classical or the latest rave music.It's the speed of the beat that counts."

According to scientific research,people may spend more time doing physical work if listening to loud music while doing the task.
A: Right
B: Wrong
C: Not mentioned

答案:A
解析:
本题给出的信息是正确的。在文章第二段第一句话中提到“... people took up to 20% longer to perform physical and mental tasks to loud music.”由此可见,只要听着声音较大的音乐,无论是进行体力劳动还是脑力劳动大约都会多花费20%的时间。


本题给出的信息是错误的。在文章第二段最后一句话中提到了埃德蒙·金的观点" not only is loud music a nuisance to others , it could also be the cause of accidents",由此可见,吵闹的音乐不光会影响到别人,还会导致车祸,所以他并不认为大声的音乐时驾驶员没有害处。


文章没有谈到这方面的信息。文章中只在最后一段提到“if music is above 60 beats per minute , listeners experience a faster heart rate and increased blood pressure.”如果每分钟音乐的节拍超过60下,听者就会感到心跳加速和血压增高。全文没有任何地方提到了喧闹的音乐是否会造成心脏病发作。


本题给出的信息是错误的。在第三段中提到:" At 95 decibels reaction times to tasks that involve decision making plummeted by 20% .”。只要抓住这一细节,即可得出答案。由这句话可以知道,减少的幅度是20%而不是53%。


文章没有谈到这方面的信息。全文完全没有提到爵士乐这种音乐形式,只提到了节奏感较强以及较为轻松的音乐。


本题给出的信息是正确的。文章最后一段开头就提到了康拉德·金,他说:" It is important that drivers choose their music carefully when driving.”并指出了需要慎重选择音乐的原因。


本题给出的信息是正确的。文章最后一句话指出:" It's the speed of the beat thatcounts.”这里count意思是“重要”,所以我们很容易得出结论,音乐节拍的速度是一个重要的衡量标准。

第8题:

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

A.Noise coming from that air starting valve

B.Continuous operation of the starting air compressor

C.Zero air pressure in the air starting system

D.Overheated starting air pipe to the cylinder head


正确答案:D

第9题:

共用题干
Music and Driving
Listening to loud music while driving can seriously hamper reaction times and cause accidents,new research suggests.
A Canadian study found people took up to 20% longer to perform physical and mental tasks to loud music .If motorists were delayed that long at the wheel they could suffer a fatal crash, warned the RAG Foundation,a British motoring organization.Edmund King,the RAC
Foundation's executive director,said the study showed that"not only is loud music a nuisance to other,it could also be the cause of accidents".
Earlier research by the RAG Foundation found drivers were twice as likely to skip a red light while listening to music.In the Canadian study volunteers carried out tasks while listening to levels of noise varying from 53 decibels(equivalent to an office environment)to 95 decibels(equivalent to an oil rig).Researchers found reactions to be significantly decreased at higher noise levels for both physical and mental work.At 95 decibels reaction times to tasks that involve decision making plummeted(骤然减少)by 20%.Edmund King said:" The findings of the Canadian study are bad news for decibel-loving drivers,as they prove that not only is loud music a nuisance to others,it could also be the cause of accidents on the roads."Drivers are at even greater risk if they listen to music with a pounding beat rather than more relaxed tunes,according to experts.
Conrad King,consultant psychologist to the foundation,said:"It is important that drivers choose their music carefully when driving,as up-tempo music has been shown to cause drivers to have double the amount of accidents as those listening to slower music."In general,if music is ahove 60 beats per minute,listeners experience a faster rate and increased blood pressure."It doesn't matter if you listen to opera,classical or the latest rave music.It's the speed of the beat that counts."

Conrad King suggests that drivers be careful when choosing the music.
A: Right
B: Wrong
C: Not mentioned

答案:A
解析:
本题给出的信息是正确的。在文章第二段第一句话中提到“... people took up to 20% longer to perform physical and mental tasks to loud music.”由此可见,只要听着声音较大的音乐,无论是进行体力劳动还是脑力劳动大约都会多花费20%的时间。


本题给出的信息是错误的。在文章第二段最后一句话中提到了埃德蒙·金的观点" not only is loud music a nuisance to others , it could also be the cause of accidents",由此可见,吵闹的音乐不光会影响到别人,还会导致车祸,所以他并不认为大声的音乐时驾驶员没有害处。


文章没有谈到这方面的信息。文章中只在最后一段提到“if music is above 60 beats per minute , listeners experience a faster heart rate and increased blood pressure.”如果每分钟音乐的节拍超过60下,听者就会感到心跳加速和血压增高。全文没有任何地方提到了喧闹的音乐是否会造成心脏病发作。


本题给出的信息是错误的。在第三段中提到:" At 95 decibels reaction times to tasks that involve decision making plummeted by 20% .”。只要抓住这一细节,即可得出答案。由这句话可以知道,减少的幅度是20%而不是53%。


文章没有谈到这方面的信息。全文完全没有提到爵士乐这种音乐形式,只提到了节奏感较强以及较为轻松的音乐。


本题给出的信息是正确的。文章最后一段开头就提到了康拉德·金,他说:" It is important that drivers choose their music carefully when driving.”并指出了需要慎重选择音乐的原因。


本题给出的信息是正确的。文章最后一句话指出:" It's the speed of the beat thatcounts.”这里count意思是“重要”,所以我们很容易得出结论,音乐节拍的速度是一个重要的衡量标准。

第10题:

Life gets noisier every day and very few people can free from noise of some sort or another.It doesn′t matter where you live--in the middle of a modem city,or a faraway village--the chances that you will be disturbed by jet aero planes,transistor radios,oil powered engines,etc.,are almost everywhere.We seem to be getting used to noise,too.Some people feel quite lonely without background music while they are working.
Scientific tests have shown that total silence can be very frightening experience for human beings.However,some people enjoy listening to pop music which is very loud,and this can do harm to their eardrums(耳鼓).The noise level in some disco is far above the usual safety level for heavy industrial areas.
One recent report about noise and concentration(专心)suggested that although a lot of people say that any noise disturbs their concentration,what really affects their ability to concentrate is a change in the level of noise.It goes on to say that a background noise,which doesn′t change too much(music,for example)may even help people to concentrate.

"Background music"in the passage means

A.music played in the concert
B.a kind of noise coming into your ears
C.music which helps people to concentrate
D.music played while people are working

答案:D
解析:
考情点拨:词义猜测题。应试指导:从第一段最后一句可知,background music是人们工作时听的音乐。

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