单选题When a rocket is launched, ______ of long streams of flame and smoke can be seen.（近义分月）A dispersionB eruptionC emissionD release

题目
单选题
When a rocket is launched, ______ of long streams of flame and smoke can be seen.（近义分月）
A

dispersion

B

eruption

C

emission

D

release

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1.Sadeleapttofamewiththe___ofherdebutsingleYourLoveIsKing.A.productionB.issueC.emissionD.release

2.The rocket will weigh about 200 tons when _____.A. being completedB. completedC. completingD. have been completed

3.Which three statements are true regarding the use of the Database Migration Assistant for Unicode(DMU)?()A. A DBA can check specific tables with the DMUB. The database to be migrated must be opened read-only.C. The release of the database to be converted can be any release since 9.2.0.8.D. The DMU can report columns that are too long in the converted characterset.E. The DMU can report columns that are not represented in the converted characterset.

4.Tom: Can I park in the staff car park?David: No, I'm afraid you can't. Only managers can park there. You can park behind the building.Tom: Okay. When can I have lunch?David: You can't go before 12:30 because we are very busy, but after 1:00 o'clock you can go when you like. You can eat and drink in the office, but you can't smoke here. Everyone goes to the coffee lounge, because they can smoke there.Tom: Can I use the phone?David: Yes, but you can't phone abroad.(1). Why can't Tom park in the staff car park?A、Because he does not work here.B、Because he is not a manager.C、Because he is a new comer.(2). Which of the following is true?A、Tom can park his car behind the building.B、Tom can use the manager's car.C、David can help Tom to park his car in the staff car park.(3). When can Tom go to have his lunch?A、Before 12:30.B、After 12:30.C、After 1:00.(4). What can Tom do in the office?A、Eat and drink.B、Smoke.C、Phone abroad.(5). Where can everyone go to smoke?A、In the car park.B、In the coffee lounge.C、In the café near the office building.

更多“单选题When a rocket is launched, ______ of long streams of flame and smoke can be seen.（近义分月）A dispersionB eruptionC emissionD release”相关问题

  • 第1题：

    What are three relevant design considerations when using the 15216 EDFA? ()(Choose three.)

    A. dispersion

    B. Optical SNR

    C. span attenuation

    D. four wave mixing

    E. receiver sensitivity


    参考答案：B, C, E

  • 第2题：

    An on-load release system on a survival craft means the cable can be released ______.

    A.only when the load is taken off the cable

    B.only when there is a load on the cable

    C.only when activated by the controls at the lowering station

    D.at any time


    正确答案：D
    带有压力释放器的救生艇筏可用手动等方式在任何时间落放。

  • 第3题：

    共用题干
    Rockets in the Sky
    If someone asked you,"What color is the sky?"I expect that you would answer,"Blue."I am afraid that you would be wrong.The sky has no color.When we see blue,we are looking at blue sunlight.The sunlight is shining on little bits of dust in the air.
    We know that there is air all around the world.We could not breathe without air.Airplanes could not fly without air.They need air to lift their wings.Airplanes cannot fly very high because as they go higher the air gets thinner.If we go far enough away from the earth,we find there is no air.
    What is the sky?The sky is space.In this space there is nothing except the sun,the moon and all the stars. Scientists have always wanted to know more about the other worlds in the space.They have looked at them through telescopes and in this way they have found out a great deal.The moon is about 384 ,000 kilometers away from the earth.An airplane cann't fly to the moon but there is a thing that can fly even when there is no air. This is rocket.
    I am sure that you are asking,"How does a rocket fly?"If you want to know,get a balloon and then blow it up until it is quite big.Do not tie up the neck of the balloon.Let go!The balloon will fly off through the air very quickly.The air inside the balloon tries to get out.It rushes out through the neck of the balloon and this pushes the balloon through the air.It does not need wings like an airplane.
    This is how a rocket works.It is not made of rubber（橡胶）like a balloon,of course.It is made of metal. The metal must not be heavy but it must be very strong.There is gas inside the rocket which is made very hot. When it rushes out of the end of the rocket,the rocket is pushed up into the air.
    Rockets can fly far out into space.Rockets with men inside them have already reached the moon.Several rockets,without men inside them,have been sent to other worlds much farther away.One day rockets may be able to go anywhere in the space.

    Which of the following statements about a rocket is NOT true?
    A:It can fly when there is no air.
    B:It can fly without wings.
    C:It is made of strong metal.
    D:It is propelled by burning gas inside it.

    答案：D
    解析：
    根据第一段第四句可知，天空没有颜色。
    根据第二段第五句“Airplanes cannot fly very high because as they go higher the air gets thinner.”可知，由于位置越高，空气越稀薄，飞机飞不了太高。
    根据第五段可知，火箭飞行的原理与没扎口的膨胀的气球相似。
    根据第六段最后一句“When it rushes out of the end of the rocket , the rocket is pushed upinto the air.”可知，火箭是由热气流高速向后喷出所产生的反作用力来推动的，而不是由内部燃烧的气体推动的。
    根据第六段最后一句可知，当热气从火箭尾部冲出时，火箭被送人空中。C项中的“itsbottom”是第六段最后一句中的“the end of the rocket”的同义转换。

  • 第4题：

    What are three relevant design considerations when using the 15216 EDFA? （）(Choose three.)

    • A、dispersion
    • B、Optical SNR
    • C、span attenuation
    • D、four wave mixing
    • E、receiver sensitivity

    正确答案:B,C,E

  • 第5题：

    单选题
    Although lube oils used in the main lubricating service systems should have a relatively high flash point to avoid ignition, they can create smoke and fire hazards when they（）
    A

    are exposed to a vacuum

    B

    come in contact with extremely hot surfaces

    C

    are reduced in temperature to just above the pour point

    D

    become extremely agitated or aerated


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    Can people smoke in the plane?
    A

    No, they can’t.

    B

    Yes, but only in some areas of the plane.

    C

    Yes, but only in the cabin.


    正确答案： B
    解析：
    题干意为：乘客可以在飞机里吸烟吗? 通知中提到：“You can smoke on the left. hand side of the passenger cabin，once the signs…’’, 也就是当机舱前面的信号灯关闭时，乘客可以在乘机室左侧吸烟。这说明乘客可以吸烟，但只能在某些区域内吸烟。C提到的“机舱”范围过大，是错误的。

  • 第7题：

    单选题
    How can you keep fit _____ you smoke so much every day?
    A

    but

    B

    however

    C

    if

    D

    otherwise


    正确答案： B
    解析：

  • 第8题：

    单选题
    Release the （）(制动器)when letting go the anchor.
    A

    stopper

    B

    brake

    C

    locker

    D

    derrick


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    A high-velocity fog stream can be used in fire fighting situations to drive heat and smoke ahead of the fire fighters in a passageway. This technique should only be used when（）.
    A

    using a 2-1/2 inch hose

    B

    there is an outlet for the smoke and heat

    C

    the fire is totally contained by the ship's structure

    D

    at least two fog streams can be used


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）
    A

    12 hand red flares

    B

    12 rocket parachute flares

    C

    12 hand combination flares and orange smoke signals

    D

    6 hand red flares，and 6 hand orange smoke signals


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Which sequence is correct when launching a lifeboat stowed in gravity davits?（）
    A

    Release gripes，turn on emergency disconnect switch，release frapping lines

    B

    Release tricing pennants，turn on emergency disconnect switch，release frapping lines

    C

    Operate limit switches，release gripes，lift brake

    D

    Release gripes，lift brake，release tricing pennants


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    When a davit-launched raft is lowered from a ship，upon becoming waterborne，the raft is released by（）.
    A

    activating the release lock of the hook

    B

    pulling smartly on the knobbed cocking lanyard

    C

    the effects of buoyancy removing the weight of the raft from the hook

    D

    releasing the boarding flap and the bowsing lines


    正确答案： C
    解析： 暂无解析

  • 第13题：

    A high-velocity fog stream can be used in fire fighting situations to drive heat and smoke ahead of the fire fighters in a passageway. This technique should only be used when ______.

    A.using a 2-1/2 inch hose

    B.there is an outlet for the smoke and heat

    C.the fire is totally contained by the ship’s structure

    D.at least two fog streams can be used


    正确答案：B
    烟或热量驱动走廊上的消防器，高速率雾蒸汽用于灭火，这种技术应仅用于有烟和热量的出口。

  • 第14题：

    What makes the space shuttle（ ）is that it takes off like a rocket but lands like an airplane.Thus,when it has accomplished its mission,it can be ready for another trip in about two weeks.

    A.exceptional
    B.strange
    C.unique
    D.rare

    答案：C
    解析：
    此句说明航天飞机能像火箭一样发射，像飞机一样着陆，这使它成为“独一无二的”，用unique“独特的”来形容最为适合。

  • 第15题：

    What are three relevant design considerations when using the 15216 EDFA？（）

    • A、 dispersion
    • B、 Optical SNR
    • C、 span attenuation
    • D、 four wave mixing
    • E、 receiver sensitivity

    正确答案:B,C,E

  • 第16题：

    Which three statements are true regarding the use of the Database Migration Assistant for Unicode(DMU)?（）

    • A、A DBA can check specific tables with the DMU
    • B、The database to be migrated must be opened read-only.
    • C、The release of the database to be converted can be any release since 9.2.0.8.
    • D、The DMU can report columns that are too long in the converted characterset.
    • E、The DMU can report columns that are not represented in the converted characterset.

    正确答案:A,D,E

  • 第17题：

    单选题
    A major advantage of the NAVTEX system when compared to other systems is that（）.
    A

    the information can be received on an ordinary FM radio

    B

    warnings are printed out for reading when convenient

    C

    broadcasts are at scheduled times

    D

    a low frequency band is used for long distance transmission


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Excuse me, can I smoke here？（）
    A

    You mustn't

    B

    No

    C

    You'd better not

    D

    I'm sorry, you can


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    The author can’t remember his relatives clearly because _____.
    A

    he was fully occupied with observing nature

    B

    he didn’t live very long with them

    C

    the family was extremely large

    D

    he was too young when he lived with them


    正确答案： D
    解析：
    根据题题目定位到第二段。作者记不住亲戚的原因是他只忙于观察自然世界了，再结合上下文，可确定答案为A。C项“家庭实在太大”为迷惑项，但是偏离了文章主旨。A项、D项文章没有提及。故A项为正确答案。

  • 第20题：

    单选题
    When visibility is restricted（），we can say it is restricted visibility.
    A

    by long distance

    B

    by the darkness at night

    C

    by a vessel in front

    D

    by fog or falling snow


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    The author can't remember his relatives clearly because______.
    A

    he was fully occupied with observing nature

    B

    he didn't live very long with them

    C

    the family was extremely large

    D

    he was too young when he lived with them


    正确答案： C
    解析：
    细节题。根据题题目定位到第二段。作者记不住亲戚的原因是他只忙于观察自然世界了，再结合上下文，可确定答案为A。C项“家庭实在太大”为迷惑项，但是偏离了文章主旨。A项、D项文章没有提及。故A项为正确答案。

  • 第22题：

    单选题
    An on-load release system on a survival craft means the cable can be released（）.
    A

    only when the load is taken off the cable

    B

    only when there is a load on the cable

    C

    only when activated by the controls at the lowering station

    D

    at any time


    正确答案： D
    解析： 暂无解析

  • 第23题：

    多选题
    Which three statements are true regarding the use of the Database Migration Assistant for Unicode(DMU)?（）
    A

    A DBA can check specific tables with the DMU

    B

    The database to be migrated must be opened read-only.

    C

    The release of the database to be converted can be any release since 9.2.0.8.

    D

    The DMU can report columns that are too long in the converted characterset.

    E

    The DMU can report columns that are not represented in the converted characterset.


    正确答案： B,C
    解析： 暂无解析

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