问答题A train traveling at a speed of 80 mph enters a tunnel that is 0.5 miles long. The length of the train is 0.25 miles. How long does it take for all of the train to pass through the tunnel, from the moment the front enters, to the moment the rear emerge

题目
问答题
A train traveling at a speed of 80 mph enters a tunnel that is 0.5 miles long. The length of the train is 0.25 miles. How long does it take for all of the train to pass through the tunnel, from the moment the front enters, to the moment the rear emerges?
相似考题

1.Why does the author say "we are deprived of the use of our eyes" ?A． People won't use their eyes.B． In traveling at high speed, eyes become useless.C． People can' t see anything on their way of travel.D． People want to sleep during travelling.

2.The spur geared mooring winches have advantages over worm geared ones in .A.higher efficiency of the gear train while reversingB.the higher gear ratioC.the multi-start featureD.higher recovering speed

3.The train moved at full speed.It was soon out of( ).A、sightB、railwayC、placeD、order

4.The high－speed train service is planned to () from the city to the countryside.A、extentB、extendC、expenseD、expanse

更多“A train traveling at a speed of 80 mph enters a tunnel that”相关问题

  • 第1题：

    We drove to the station at full speed and caught the train by_____.

    A、skin of our teeth

    B、the salt of the earth

    C、a lion in the way

    D、a piece of cake


    参考答案：A

  • 第2题：

    What can we learn from the story?

    A. Comfort in traveling by train.

    B. Pleasure of living in the country.

    C. Reading gives people delight.

    D. Smiles brighten people up.


    正确答案：D
    75.选D。文章主要讲述作者从看到马来西亚人总会在站台上笑对火车里的陌生人挥手后，心情由无聊、乏味变成高兴。可以看出，微笑能让人提起精神。

  • 第3题：

    I undertake to bring to the notice of the Suez Canal Authorities，before my vessel ______ the Canal，any defects which may appear.

    A.enters into

    B.enters

    C.enters in

    D.enters to


    正确答案：B

  • 第4题：

    --Did you look up the time of the high-speed trains to Guangzhou
    --Yes, the early train is _____________ to leave at 3 : 00 p.m.

    A.about
    B.likely
    C.due
    D.possible

    答案：C
    解析：
    考查形容词辨析及固定搭配。句意为“——你查了去广州的高铁的时间了吗 ——是的，早班火车预计是下午3点出发。”about“即将的，正要的”，用于be about to do“刚要做，即将做”，往往不与具体的时间状语连用；likely和possible都表示“可能”的意思，火车的时刻表是事先制订好的，不能说“可能”在什么时候出发，而且possible一般以it作形式主语；due“到期的，预定的”，用于be due to do“按期该做，预定要做”．选C。

  • 第5题：

    This train is going（）the tunnel quickly.

    • A、down
    • B、through
    • C、along
    • D、in 

    正确答案:B

  • 第6题：

    问答题
    An aircraft flew from A to B at an average speed of 230 mph. It returned from B to A at an average speed of 300 mph. What was its average speed for the two journeys?

    正确答案： 260 mpf
    解析：
    设飞机从A到B耗时a小时，从B到A耗时b小时，那么可得出230a=300b；飞机飞行整个路程中所用的平均速度则为300b/(a+b)；将两个方程式合并，便可得出平均速度约为260.3 mpf，四舍五入后取结果260mpf。

  • 第7题：

    单选题
    Safe speed is defined as that speed where（）.
    A

    you can stop within your visibility range

    B

    the vessel is not subject to vibrations

    C

    you are traveling slower than surrounding vessels

    D

    you can take proper and effective action to avoid collision


    正确答案： D
    解析： 暂无解析

  • 第8题：

    问答题
    A train traveling at a speed of 80 mph enters a tunnel that is 0.5 miles long. The length of the train is 0.25 miles. How long does it take for all of the train to pass through the tunnel, from the moment the front enters, to the moment the rear emerges?

    正确答案： One minute.
    解析：
    由于车头进隧道到车尾出隧道这一段时间也要包括在内，因此火车通过的路程实际上是隧道长加车长，即0.5+0.25=0.75(miles)。则可列方程80miles/60minutes=0.75miles/x, x=0.5625(minute)≈1minute.

  • 第9题：

    单选题
    If they built a Channel tunnel, you would_______.
    A

    neither take a train nor go by car

    B

    either take a train or go by car

    C

    only take a train

    D

    only take a bus


    正确答案： C
    解析：

  • 第10题：

    单选题
    Every vessel should at all times proceed at a safe speed. Safe speed is defined as that speed where（）.
    A

    you can stop within your visibility range

    B

    you can take proper and effective action to avoid collision

    C

    you are traveling slower than surrounding vessels

    D

    no wake comes from your vessel


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    At 1923，you increase speed to make good 9.2 mph. What is the first gage you will pass after your speed change?（）
    A

    Cottonwood Point

    B

    Tiptonville

    C

    Fulton

    D

    New Madrid


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    In most cases，when a large merchant vessel enters shallow water at high speed the（）.
    A

    maneuverability will increase

    B

    speed will increase

    C

    bow will squat farther than the stern

    D

    vessel will rise slightly，on a level plane


    正确答案： A
    解析： 暂无解析

  • 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：

    B：根据句义，用括号内所给词的适当形式填空。

    96. I think traveling by train is more popular. Because it’s much cheaper and far more _________(enjoy).


    正确答案：
    enjoyable

  • 第15题：

    Every vessel should at all times proceed at a safe speed.Safe speed is defined as that speed where ______.

    A.no wake comes from your vessel

    B.you can stop within your visibility range

    C.you can take proper and effective action to avoid collision

    D.you are traveling slower than surrounding vessels


    正确答案：C
    每一艘船在任何时候都必须使用安全航速。安全航速定义为能够让你采取适合和有效避免碰撞动作的速度。

  • 第16题：

    He said he liked traveling by train,but after six hours standing in the corridor,he changed his____.

    A.sound
    B.voice
    C.tone
    D.tune

    答案：D
    解析：
    须注意区别tune和tone的引申义。D.tune的基本意思是“曲调”，引申为“态度；看法”等，如：change one’s tune改变了态度或看法；C.tone是“声音，声调”，引申为“口气，语气”等，如：I don’t like your talking to me in a decisive tone.我不喜欢你用一种断然的语气跟我说话。

  • 第17题：

    行程车速（Traveling Speed）


    正确答案: 又称区间车速，是车辆行驶路程与通过该路程的总时间（包括停车时间）的比值。它是一项综合指标，用于评价道路通畅程度、估计行车延误。

  • 第18题：

    单选题
    The spur geared mooring winches have advantages over worm geared ones in（）
    A

    higher efficiency of the gear train while reversing

    B

    the higher gear ratio

    C

    the multi-start feature

    D

    higher recovering speed


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    SAFE SPEED is defined as that speed where（）.
    A

    you can stop within your visibility range

    B

    you can take proper and effective action to avoid collision

    C

    you are traveling slower than surrounding vessels

    D

    no wake comes from your vessel


    正确答案： A
    解析： 暂无解析

  • 第20题：

    名词解释题
    行程车速（Traveling Speed）

    正确答案： 又称区间车速，是车辆行驶路程与通过该路程的总时间（包括停车时间）的比值。它是一项综合指标，用于评价道路通畅程度、估计行车延误。
    解析： 暂无解析

  • 第21题：

    问答题
    A man jogs at 6 mph over a certain distance and walks back over the same route at 4 mph. What is his average speed for the journey?

    正确答案： 4.8 mph
    解析：
    mph英里/小时。设单程距离为x，平均速度=总距离/总时间=2x/(x/6+x/4)=4.8

  • 第22题：

    单选题
    This train is going（）the tunnel quickly.
    A

    down

    B

    through

    C

    along

    D

    in 


    正确答案： B
    解析： 暂无解析

  • 第23题：

    问答题
    A car traveled from A to B in 30 minutes. The first half of the trip was covered at 50 mph, and the second half at 60 mph. What was the average speed?400/11 - 500/11 - 600/11 - 700/11

    正确答案： 600/11 miles
    解析：
    这是一道计算题，我们设平均时速为X，则0.25X/50+0.25X/60=0.5，进而可得X=600/11，因此该选600/11。

  • 第24题：

    单选题
    As you approach Old River Control Structure Light you see a flashing amber light. You should（）.
    A

    navigate as close to the left descending bank as safety permits

    B

    navigate as close to the right descending bank as safety permits

    C

    turn into the inflow channel as the bypass is now open

    D

    slow your engine speed to not more than 5 mph


    正确答案： C
    解析： 暂无解析

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