A ______ is created by a pressure gradient or slope in the water level．A.gradient currentB.density currentC.swift currentD.torrent current

题目

A ______ is created by a pressure gradient or slope in the water level．

A.gradient current

B.density current

C.swift current

D.torrent current

相似考题

1.What keeps Grimsvotn still?A. The slow flow of waterB. The low water temperatureC. The thick glacierD. The water pressure

2.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

3.________ causes strong winds and rough sea at northwest Bay of Biscay．A.Strong low pressureB.Strong high pressureC.Steep pressure gradientD.Steep gradient pressure

4.Pressure gradient is a measure of ______.A.a high-pressure areaB.pressure difference over horizontal distanceC.pressure difference over timeD.vertical pressure variation

参考答案和解析
正确答案：A
更多“A ______ is created by a pressure gradient or slope in the water level.A.gradient currentB ”相关问题

  • 第1题：

    A swift current occurring in a narrow passage connecting two large bodies of water，which is produced by the continuously changing difference in height of tide at the two ends of the passage，is called a ______.

    A.hydraulic current

    B.rectilinear current

    C.rotary current

    D.harmonic current


    正确答案：A

  • 第2题：

    In reading a weather map, closely spaced pressure gradient lines would indicate ______.

    A.high winds

    B.high overcast clouds

    C.calm or light winds

    D.fog or steady rain


    正确答案：A
    在读看气象图时，密集的压力梯度线显示将有疾风。

  • 第3题：

    单选题
    A（）is created by a pressure gradient or slope in the water level.
    A

    gradient current

    B

    density current

    C

    swift current

    D

    torrent current


    正确答案： D
    解析： 暂无解析

  • 第4题：

    单选题
    During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.
    A

    150 millimeters of water pressure

    B

    125 millimeters of water pressure

    C

    100 millimeters of water pressure

    D

    75 millimeters of water pressure


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.
    A

    starters

    B

    pressure switches

    C

    pressure

    D

    water


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    （）causing strong winds and rough sea north west Bay of Biscay.
    A

    Strong low pressure

    B

    Strong high pressure

    C

    Steep pressure gradient

    D

    Steep gradient pressure


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    Supposing there is a water container. The taller the container, _____at the bottom.
    A

    greater will the water pressure be

    B

    the water pressure will be greater

    C

    the greater will be the water pressure

    D

    greater the water pressure will be


    正确答案： B
    解析：
    句意：假设这里有一个装水的容器，容器越高，容器底部所受的压强就越大。这里考查越…越…的英文表达方式，C项正确，即the more...the more....的形式。

  • 第8题：

    单选题
    The second stage feed-water temperature and shell absolute pressure in a multistage, flash type, distilling plant is （）
    A

    higher than the first stage feed-water temperature and absolute shell pressure

    B

    lower than the first stage feed-water temperature and absolute shell pressure

    C

    the same as the first stage feed-water temperature and absolute shell pressure

    D

    not related to the feed-water temperature and absolute shell pressure


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    The boiler feed pump discharge pressure is higher than the steam drum pressure to （）.
    A

    ensure feed water flow into the boiler

    B

    keep the steam drum pressure high

    C

    prevent water hammer in the feed line

    D

    help the feed water flash to steam


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    Pressure gradient is a measure of（）.
    A

    a high-pressure area

    B

    pressure difference over horizontal distance

    C

    pressure difference over time

    D

    vertical pressure variation


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    The upward pressure of displaced water is called（）.
    A

    buoyancy

    B

    deadweight

    C

    draft

    D

    freeboard


    正确答案： B
    解析： 暂无解析

  • 第12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13题：

    ______causing strong winds and rough sea north west Bay of Biscay.

    A.Strong low pressure

    B.Strong high pressure

    C.Steep pressure gradient

    D.Steep gradient pressure


    正确答案：C
    强气压梯度导致了比斯开湾西北的强风和狂狼。

  • 第14题：

    英译中（Translate）：water potential gradient（）


    正确答案:水势梯度

  • 第15题：

    单选题
    Supposing there is a water container. The taller the container, ______ at the bottom.
    A

    greater will the water pressure be

    B

    the water pressure will be greater

    C

    the greater the water pressure will be

    D

    greater the water pressure will be


    正确答案： C
    解析：
    假设这里有一个装水的容器，容器越高，容器底部所受的压强就越大。这里考查越…越…的英文表达方式，C项正确，即the more...the more....的形式。

  • 第16题：

    单选题
    In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?（）
    A

    An open vent in the cooling system

    B

    A fouled sea chest

    C

    A restricted water passage in the engine

    D

    Air entrained in the cooling water


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    The three conditions which cause engine shutdown are overspeed，low lube oil pressure，and（）.
    A

    High lube oil pressure

    B

    High jacket water pressure

    C

    High jacket water temperature

    D

    Low jacket water pressure


    正确答案： D
    解析： 暂无解析

  • 第18题：

    填空题
    英译中（Translate）：water potential gradient（）

    正确答案： 水势梯度
    解析： 暂无解析

  • 第19题：

    单选题
    In a diesel engine jacket water cooler, with seawater cooling the fresh water, the（）
    A

    sea water temperature must never be warmer than 40℃

    B

    jacket water pressure should always be greater than the sea water pressure

    C

    jacket water temperature must always be less than 60℃

    D

    jacket water pressure must always be less than the sea water pressure


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the following statements is true concerning an oil cooler?（）
    A

    The oil temperature is less than the cooling water temperature

    B

    The oil pressure is less than the cooling water pressure

    C

    The oil pressure is greater than the cooling water pressure

    D

    The oil flow control valve is always installed in the oil input line


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of （）.
    A

    oil

    B

    sea water

    C

    refrigerant

    D

    fresh water


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    In a general oil cooler circulated by sea water, the oil is at a higher pressure, the result being that any leak in the cooler will mean a loss of （）.
    A

    oil

    B

    sea water

    C

    air

    D

    fresh water


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    In reading a weather map，closely spaced pressure gradient lines would indicate（）.
    A

    high winds

    B

    high overcast clouds

    C

    calm or light winds

    D

    fog or steady rain


    正确答案： A
    解析： 暂无解析

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