A high negative ion count is likely to be foundA．near a pond with a water pump.B．close to a slow-flowing river.C．high in some barren mountains.D．by a rotating water sprinkler.

题目

A high negative ion count is likely to be found

A．near a pond with a water pump.

B．close to a slow-flowing river.

C．high in some barren mountains.

D．by a rotating water sprinkler.

相似考题

1.If a refrigeration compressor is short cycling on high head pressure, you shouldA.purge the condenser if the waterside is dirtyB.check for proper water flow through the condenserC.increase the high pressure cutout settingD.reduce the cooling water flow

2.Conditions for crossing a rough bar are usually best at ______.A.low water slackB.high water slackC.high water ebbD.high water flood

3.The height of tide is the ______.A.depth of water at a specific time due to tidal effectB.difference between the depth of the water and the area's tidal datumC.difference between the depth of the water and the high water tidal levelD.difference between the depth of the water at high tide and the depth of the water at low tide

4.If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause may be ______.A.high steam pressure in the boilerB.abnormally high feed-water temperatureC.abnormally high boiler water temperatureD.steam demand exceeding feed pump capacity

更多“A high negative ion count is likely to be foundA．near a pond with a water pump.B．close to a slow-flowing river.C．high in some barren mountains.D．by a rotating water sprinkler.”相关问题

  • 第1题：

    The meaning of ebb tide is that ______.

    A.tide is falling from high water to low water

    B.tide is rising from low water to high water

    C.tide is reaching to a highest level

    D.tide is reaching to a lowest level


    正确答案：A

  • 第2题：

    共用题干
    Some doctors think that you should drink a glass of water each morning. You should drink water before doing anything else.The temperature of the water should be similar to body temperature:not hot,not cold.Why should you drink this water?______(46).It helps clean out your kidneys.It prepares your stomach for digestion.______(47).After drinking water,the intestines can more easily take out nutrients from our food. And water helps us go to the bathroom more easily.
    Scientists suggest that people take in 1,600 milliliters of water each day.______(48).If you do,your kidneys will have to work much harder to eliminate it. It's better to drink some in morning and some in afternoon.______(49).And during meals,they think water dilutes the juices produced in our stomachs.This can interfere with normal digestion.
    Are you drinking enough water every day?Check the color of your urine.______(50).if your urine is very dark yellow,your probably need to drink more water. A little water each day could make you much healthier.

    _________（47）
    A:If it is light yellow,you are probably drinking enough
    B:Water can also help your intestines work better
    C:Some people think it's better to drink between meals
    D:Water helps your body in many ways
    E:But don't drink all of that water in one sitting
    F: Water is an essential element of life

    答案：B
    解析：
    本题考查的是对上下文之间意义关系的理解和对文章细节的把握。空格上一句问：“为什么要喝水呢？”而空格的下一句具体说明了喝水对人体有各种益处。因此这里应该是概括提出喝水有益健康，D与上下文联系最好。
    本题考查的是对上下文之间意义关系的理解和对文章细节的把握。空格的下一句是“饮水后，肠道能够更容易地从食物中吸取营养物质，也能让排泄更容易”，因此这里表述的应该是有关饮水与肠道的影响。
    本题考查的是对上下文之间意义关系的理解和对文章细节的把握。上一句说到“科学家建议每人一天应喝1 600毫升的水”，而空格后内容是“否则你的肾脏在处理这些水的时候会比较困难”，因此选项E与前后内容最符合。
    本题考查的是对上下文之间意义关系的理解和对文章细节的把握。空格后内容是“他们认为在吃饭的时候喝水会稀释胃液，可能干扰消化”。因此选项C与内容最符合。
    本题考查的是对上下文之间意义关系的理解和对文章细节的把握。上一句说到“检查一下你尿液的颜色”，而空格后的内容是“如果是暗黄色，你可能需要多喝水”，因此选项A最合适。

  • 第3题：

    Which of the following options describes Segment Shrink？（）  

    • A、 Reclaims space above and below the high-water mark without using additional space
    • B、 Moves rows to a new physical location，resetting the high-water mark，but uses additional space during the operation
    • C、 Deallocates space above the high-water mark that is currently not in use
    • D、 None of the above

    正确答案:A

  • 第4题：

    单选题
    During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should （）
    A

    notify the duty officer, reduce the engine speed, take some measures to remove failures

    B

    notify the duty officer and stop the engine immediately, find the cause and remove failures

    C

    notify the C/E

    D

    notify the captain


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n)（）.
    A

    apogean tide

    B

    double high water

    C

    perigean tide

    D

    bore


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    （） water is more expensive than fresh water It has high specific heat and low viscosity.
    A

    Distilled

    B

    Distilling

    C

    Boiling

    D

    Boiled


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）
    A

    a dirty lube oil strainer

    B

    internal water leaks

    C

    an oil suction line restriction

    D

    excessive wears of the cooling water pump


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    The height of tide is the （）.
    A

    depth of water at a specific time due to tidal effect

    B

    difference between the depth of the water and the area's tidal datum

    C

    difference between the depth of the water and the high water tidal level

    D

    difference between the depth of the water at high tide and the depth of the water at low tide


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the （）
    A

    raw water pump discharge

    B

    expansion tank outlet

    C

    cooling water heat exchanger

    D

    outlet engine jacket water outlet


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    One of the causes of ocean currents is density differences in the water. This is true because （）.
    A

    in an area of high density the water's surface is lower than in an area of low density

    B

    surface water flows from an area of high density to one of low density

    C

    the lesser the density gradient the freer the water is to move

    D

    it is the density differences that cause the currents to stay in the troughs


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
    A

    increase the amount of cooling water to the condenser

    B

    decrease the amount of cooling water to the condenser

    C

    add more refrigerant to the system

    D

    remove some refrigerant from the system


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.
    A

    high steam pressure in the boiler

    B

    abnormally high feed water temperature

    C

    abnormally high boiler water temperature

    D

    steam demand exceeding feed pump capacity


    正确答案： C
    解析： 暂无解析

  • 第13题：

    The soundings on the chart are based on the depth of water available at ______.

    A.mean low water

    B.mean lower low water

    C.mean high water

    D.mean high water springs


    正确答案：B

  • 第14题：

    We want to use the water to irrigate barren land.

    A:hairless
    B:bare
    C:empty
    D:bald

    答案：B
    解析：
    本题考查的是对形容词的认知。这句话的意思是：我们想用水浇灌贫痔的大地。barren的意思是贫痔的，例如：Life is a barren field frozen with snow．生命就像是被雪覆盖的荒芜土地。选项A hairless没有毛发的。选项B bare光秃秃的，例如：The fierce sun parched the bare earth．灼热的阳光炙烤着光秃秃的大地。选项C empty空的。选项D bald秃顶的。barren和bare意思最接近，所以选B。

  • 第15题：

    单选题
    Rotating flyweights acting against spring pressure make a simple type of （）.
    A

    governor

    B

    safety valve

    C

    reducing valve

    D

    feed water regulator


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    In some river mouths and estuaries the incoming high-tide wave crest overtakes the preceding low-tide trough. This results in a wall of water proceeding upstream，and is called a（）.
    A

    seiche

    B

    bore

    C

    boundary wave

    D

    surge


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    What describes a flood current（）.
    A

    Horizontal movement of the water toward the land after high tide

    B

    Horizontal movement of the water toward the land after low tide

    C

    Horizontal movement of the water away from the land following high tide

    D

    Horizontal movement of the water away from the land following low tide


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    Water enters the rotating impeller through the entry, known as “（）”, at the centre.
    A

    eye

    B

    hole

    C

    balance holes

    D

    opening


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    If a refrigeration compressor is short cycling on high head pressure, you should （）.
    A

    purge the condenser if the waterside is dirty

    B

    check for proper water flow through the condenser

    C

    increase the high pressure cutout setting

    D

    reduce the cooling water flow


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the following options describes Segment Shrink？（）
    A

     Reclaims space above and below the high-water mark without using additional space

    B

     Moves rows to a new physical location，resetting the high-water mark，but uses additional space during the operation

    C

     Deallocates space above the high-water mark that is currently not in use

    D

     None of the above


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    The soundings on the chart are based on the depth of water available at （）.
    A

    mean low water

    B

    mean lower low water

    C

    mean high water

    D

    mean high water springs


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    The meaning of ebb tide is that（）.
    A

    tide is falling from high water to low water

    B

    tide is rising from low water to high water

    C

    tide is reaching to a highest level

    D

    tide is reaching to a lowest level


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    High diesel engine cooling water temperatures can be caused by （）.
    A

    a worn water pump

    B

    not enough coolant

    C

    air in the cooling system

    D

    all of the above


    正确答案： C
    解析： 暂无解析

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