判断题Tomorrow’s air craft may employ principles of flying fundamentally different from the Wright Brothers’ pioneering effort.A 对B 错

题目
判断题
Tomorrow’s air craft may employ principles of flying fundamentally different from the Wright Brothers’ pioneering effort.
A

对

B

错

相似考题

1.Don’t put off today’s work for tomorrow. I mean, today’s work _____ today.A. may do B. must do C. may be done D. must be done

2.The accounting principles () shall be the same as those applied in preceding years.A、being employedB、employingC、employedD、employ

3.There may be an ____ for you to see the chairman of the board tomorrow.A.abilityB.futureC.possibilityD.opportunity

4.We can infer from the passage that ______.［A］Hollywood hardly improves southern California's economy［B］the shipping industry there is as dirty as other industries［C］people living near these ports suffer the most［D］the polluted air may cause both asthma and smaller lungs

参考答案和解析
正确答案： 对
解析：
该段录音主要讲述未来的飞机可能与the Wrights’ pioneering effort有更大的不同，，人们现在只能对到底有多么不同进行猜测，而题干描述的“未来的飞机可能会采用与the Wrights’ pioneering effort从根本上不同的飞行原理”过于绝对。
【录音原文】
Tomorrow’s air craft are likely to be still more marvelous, and perhaps even more different than today’s from the Wrights’ pioneering effort. Predicting how different requires guess work, an open mind and even a dollop of science fiction.
更多“Tomorrow’s air craft may employ principles of flying fundame”相关问题

  • 第1题：

    The air cylinder bottles in the survival craft should be refilled with ______.

    A.oxygen

    B.nitrogen

    C.compressed air

    D.nitrogen and oxygen


    正确答案：C
    救生筏上的空气瓶应该充满压缩空气。

  • 第2题：

    第二组

    Under normal operation, some lubrication oil mist may be discharged from the air compressor to the air start system. This oil may be from excess compressor cylinder lubrication, from faulty oil scraper rings, or may even be suspended oil vapor contaminating the engine room atmosphere and drawn in at the compressor suction. Oil discharge is kept to a minimum by draining the after cooler, air receiver and starting system. If small quantities of lubrication oil do get passed into the starting air system, they will deposit as thin moist film over internal pipe surfaces but are not readily combustible. If a cylinder non-return valve leak while the engine is in operation, some hot gas, possibly with unburned fuel and cylinder lubrication oil, may be blown through the valve to the adjacent air manifold. With further heating from the leaky valve, this, together with the already deposited oil film, will carbonize and form. incandescent carbon. If starting air is applied to the system while still hot, the high pressure air coming into contact with the burning carbon may cause an explosion. Such an explosion will cause a flame to pass back through the air start pipe system, evaporating the deposited oil film and igniting it in the presence of air. Very high velocities and shockwaves are generated which may rupture pipes and fittings.

    Alternatively, if excessive oil has entered the air start system, a mixture of air and oil droplets may be discharged through the open cylinder non-return valve during starting. This spray may ignite due to high temperatures in the cylinder, causing a flame through the still open valve to the air manifold.

    To prevent an explosion, air start valves must be correctly maintained and lubricated to ensure correct timing and free movement with positive closing. Oil in the system must be kept to a minimum, pipe lines must be drained and cleaned internally when necessary and oil discharge from air compressors must be kept to a minimum by good maintenance.

    The passage is mainly about

    A.crankcase explosion

    B.scavenge box fire

    C.starting air pipe

    D.the danger of explosion in the starting air system


    正确答案：D

  • 第3题：

    The notice has been told everyone __________ a party will be held in the open air tomorrow.

    A.whether
    B.when
    C.where
    D.that

    答案：D
    解析：
    考查同位语从句。根据从旬结构可知从句中不缺状语，可排除B和C；再根据句子意思可知，空格后的从旬是说明句子的主语The notice的内容(明天在户外开晚会)，故该句是同位语从句，应选that连接主从句，且不可省略。故选D。

  • 第4题：

    Advertisements that__________ the travel agency's newest package vacations will air on radio and television stations tomorrow evening.

    A.promote
    B.overlook
    C.submit
    D.admire

    答案：A
    解析：
    “that…vacations”是以“advertisements”为先行词的定语从句。打广告就是促销，因此选A。

  • 第5题：

    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service.
    According to the NWS a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington
    The cool breezes may be a welcome relief this time around but remember the last few times we got hit with Arctic air？
    Temperatures in cities including Chicago Cleveland New York and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we’re sure you remember
    What’s the temperature when the report was written?

    A. About 60s and 70s
    B. Between 60s and 90s
    C. Below 60s
    D. About 80s and 90s

    答案：D
    解析：
    细节题。根据文段定位到的“Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks”。我们从该句中可得知最近几周温度在80-90，因此答案选D。A项大约在60-70左右，这个温度是未来预计的温度。B项在60-90之间，不正确。C项在60之下。因此答案选D。

  • 第6题：

    资料：We never thought we'd say this, but we'd welcome back some chilly weather.
    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.
    According to the NWS, a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington.
    The cool breezes may be a welcome relief this time around, but remember the last few times we got hit with Arctic air?
    Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we're sure you remember.

    According to the passage, what happened in early 2014?

    A.Temperatures in the U.S. fell into negative territory.
    B.People welcomed cool breezes in the U.S.
    C.Harsh winter struck in some cities of the U.S.
    D.Arctic air hit the U.S. for a few times.

    答案：C
    解析：
    本题考查的是细节理解。
    【关键词】early 2014
    【主题句】Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. 在2014年初的严冬季节，芝加哥、克利夫兰、纽约和路易斯维尔等城市的气温在很长一段时间内都下降到了个位数和负值。
    【解析】本题的问题是“根据文章，2014年初发生了什么？”选项A意为“美国气温下降到负值”；选项B意为“在美国人们欢迎冷空气的到来”；选项C意为“寒冬袭击了美国部分城市”；选项D意为“北极气团袭击了美国几次”。根据题目中关键词找到主题句，结合题意故选C。

  • 第7题：

    单选题
    Aboard a survival craft,ether can be used to（）.
    A

    start the engine in cold weather

    B

    aid in helping personnel breathe

    C

    prime the sprinkler system

    D

    prime the air supply


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    The air cylinder bottles in the survival craft should be refilled with（）.
    A

    oxygen

    B

    nitrogen

    C

    compressed air

    D

    nitrogen and oxygen


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    What is NOT a function of the air supply of a covered lifeboat?（）
    A

    Provides air for engine combustion

    B

    Pressurizes water spray system

    C

    Provides air for passenger respiration

    D

    Prevents smoke and other noxious fumes from entering craft


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    If the engine does start on air, but combustion does not immediately begin, the cause may be （）.
    A

    failure of the fuel pumps

    B

    starting air pressure too low

    C

    stop valve in air line closed

    D

    the turning gear still engaged


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）
    A

    an obstruction in an cylinder

    B

    water accumulation in some engine cylinders

    C

    low starting air pressure

    D

    low scavenge air pressure


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    The statement that “the people own the air” implies that _____.
    A

    citizens have the right to insist on worthwhile television programs

    B

    television should be socialized to cater to the nation’s whims

    C

    the government may build above present structures

    D

    the people own nothing, for air is worthless


    正确答案： A
    解析：
    第三段结尾部分，作者提到“the people own the air”，随后指出“无论是在夜晚的精华时段还是清晨，人们都拥有the air，因此广播公司每一时刻由于占用the air，都owe people something”，最后，作者指出广播公司偿还的方式是搞好服务，由此可判断，作者强调人们拥有天空，是暗示人们有权要求有意义的电视节目的播放，选项A正确。

  • 第13题：

    According to the anti -railway group, all the followings are true but ______.

    A) tunnels are dangerous to public health

    B) the noise and the glare of the engine fire may affect people' s nerves

    C) the rapid speed through the air does damage to people's lungs

    D) to those with high blood - pressure, the rapid speed of the train causes them to die


    正确答案：D
    答案：D
    [试题分析]细节题。
    [详细解答]从第二段的内容我们可以找到选项A，B，C对应的内容，而D不对，因为，文中只是提到“In those with high blood-pressure，the movement of the train might produce apoplexy，”，而不是让血压高的人死去。因此，答案为D。

  • 第14题：

    tell us briefly about the working principles of the purifier ,the oil water seperator and air compressor .


    正确答案：Purifier :the different gravity of two types of liquids: water and oil .the centrifugal force of the water move towards the outside of the disc while the oil ,which is smaller in gravity shall move toward the center of the disc .this makes the seperation of the two liquids . Oil water separator : (1) pump bilge water into first chamber :polymerization of the oil on the gathering plates ,(2) and then through a fine filter (15ppm) separation of water and oil ,(3)discharge of the water overboard via 15ppm monitor and the oil into oil sludge tank .Air compressor :take into the air from the outside atmosphere and compress it with the up going piston .then ,cool the compressed air .then compress the air once again until it reaches the stated pressure (depending on the air bottle allowed pressure ) For the maintenance of the air compressor ,fistly ,must check to make sure that the suction valve and outlet valve to be sealed ;then make periodical lifting of the piston to make the pistons are in good condition .must check the crankcance lube oil everyday .

  • 第15题：

    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service.
    According to the NWS a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington
    The cool breezes may be a welcome relief this time around but remember the last few times we got hit with Arctic air？
    Temperatures in cities including Chicago Cleveland New York and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we’re sure you remember
    According to the passage, what happened in early 2014?

    A. Temperatures in the U.S fell into negative territory
    B. People welcomed cool breezes in the U.S
    C. Harsh winter struck in some cities of the U.S
    D. Arctic air hit the U.S for a few times

    答案：D
    解析：
    细节题。根据文段定位到的“Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks”。我们从该句中可得知最近几周温度在80-90，因此答案选D。A项大约在60-70左右，这个温度是未来预计的温度。B项在60-90之间，不正确。C项在60之下。因此答案选D。

  • 第16题：

    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service.
    According to the NWS a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington
    The cool breezes may be a welcome relief this time around but remember the last few times we got hit with Arctic air？
    Temperatures in cities including Chicago Cleveland New York and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we’re sure you remember
    According to the National Weather Service____

    A. the cool mass of air originates from Canada
    B. a mass of cold air will affect both Canada and the U.S
    C. the chilly weather is back to the globe
    D. only the upper Midwest will be affected by the cool air

    答案：A
    解析：
    细节题。根据文段提到的“A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service”。我们从这句当中可以知道，在加拿大和阿拉斯加地区形成的冷空气大规模的向美国行进。可知A项符合。B项指的冷空气会同时影响加拿大和美国。C项寒流天气会重来。D项仅仅是海拔较高的中部地区会受寒潮的影响。BCD项均不符文意。因此答案选A。

  • 第17题：

    资料：We never thought we'd say this, but we'd welcome back some chilly weather.
    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.
    According to the NWS, a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington.
    The cool breezes may be a welcome relief this time around, but remember the last few times we got hit with Arctic air?
    Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we're sure you remember.

    According to the National Weather Service, ___.

    A.the cool mass of air originates from Canada
    B.a mass of cold air will affect both Canada and the U.S.
    C.the chilly weather is back to the globe
    D.only the upper Midwest will be affected by the cool air

    答案：B
    解析：
    本题考查的是细节理解
    【关键词】the National Weather Service
    【主题句】A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.根据国家气象局预测，本周一股冷空气将从北部的加拿大和阿拉斯加直驱进入美国。
    【解析】题目意为“根据国家气象中心，________？”选项A意为“冷空气源于加拿大”，选项B意为“一股冷空气将影响加拿大和美国”，选项C意为“全球进入寒冷天气”，选项D意为“只有高纬度中西部将被冷空气影响”，根据主题句，

  • 第18题：

    资料：We never thought we'd say this, but we'd welcome back some chilly weather.
    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.
    According to the NWS, a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington.
    The cool breezes may be a welcome relief this time around, but remember the last few times we got hit with Arctic air?
    Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we're sure you remember.

    What’s the temperature when the report was written?

    A.About 60s and 70s.
    B.Between 60s and 90s.
    C.Below 60s.
    D.About 80s and 90s.

    答案：D
    解析：
    本题考查的是细节理解。
    【关键词】temperature；when the report was written
    【主题句】Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. 中西部地区的气温将下降到60-70华氏度，与最近几周的80-90华氏度的温度有很大的不同。
    【解析】本题的问题是“写这篇报道时气温是多少？”。选项A意为“约为60-70华氏度”；选项B意为“为60和90华氏度之间”；选项C意为“华氏60度以下”；选项D 意为“约为80和90华氏度”。根据题目中关键词找到主题句，结合主题句故选D。

  • 第19题：

    单选题
    Which of the following may lead to the engine NOT to start on air?（）
    A

    starting air pressure too high

    B

    correct timing of starting air valves

    C

    three of the six starting valves stuck

    D

    the turning gear disengaged


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    Under the regulations for cargo vessels，which statement is TRUE concerning fireman’s outfits?（）
    A

    If a vessel carries two outfits，they may be stored in the same location

    B

    Each fireman's outfit shall contain a flame safety lamp of an approved type

    C

    Each fireman's outfit shall contain a fresh-air breathing apparatus

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第21题：

    判断题
    Tomorrow’s air craft may employ principles of flying fundamentally different from the Wright Brothers’ pioneering effort.
    A

    对

    B

    错


    正确答案： 对
    解析：
    该段录音主要讲述未来的飞机可能与the Wrights’ pioneering effort有更大的不同，，人们现在只能对到底有多么不同进行猜测，而题干描述的“未来的飞机可能会采用与the Wrights’ pioneering effort从根本上不同的飞行原理”过于绝对。
    【录音原文】
    Tomorrow’s air craft are likely to be still more marvelous, and perhaps even more different than today’s from the Wrights’ pioneering effort. Predicting how different requires guess work, an open mind and even a dollop of science fiction.

  • 第22题：

    单选题
    Starting air for auxiliary engines may be taken directly from the main reservoirs or through （）.
    A

    an auxiliary reservoir

    B

    a controlling air bottle

    C

    an emergency air compressor

    D

    a main air compressor


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    If the engine of a survival craft does not start，check to see（）.
    A

    that the fuel valve is open

    B

    if the air supply system is open

    C

    if the water sprinkler system is open

    D

    if the limit switch is on


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    The notice has been told everyone _____ a party will be held in the open air tomorrow.
    A

    whether

    B

    when

    C

    where

    D

    that


    正确答案： A
    解析：
    根据句子意思可知，从句是说明句子的主语The notice的内容（明天在户外开晚会），故该句是同位语从句，应选that连接主从句。可以转述为The notice that a party will be held in the open air tomorrow.

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