If the current and wind are in the same direction，the sea surface represents a wind speed ______.A.lower than actually existsB.higher than actually existsC.that actually existsD.that has no proportional relationship

题目

If the current and wind are in the same direction，the sea surface represents a wind speed ______.

A.lower than actually exists

B.higher than actually exists

C.that actually exists

D.that has no proportional relationship

相似考题

1.SHIFT OF WIND DIRECTION IN AN ANTICLOCKWISE MANNER, FOR EXAMPLE FROM NORTH TO WEST ( OPPOSITE OF VEERING ) defines ______.A.Backing (of wind)B.Veering (of wind)C.Shifting of windD.altering of wind

2.The best estimate of the wind direction at sea level can be obtained from observing the direction of the ______.A.cloud movementB.vessel headingC.wavesD.swells

3.If the current and wind are in opposite directions，the sea surface represents ______.A.a greatly reduced wind speedB.a higher wind speed than what really existsC.a lower wind speed than what really existsD.more turbulent winds

4.Solid green arrows on the main body of a pilot chart indicate ______.A.prevailing wind directionsB.prevailing ocean current directionsC.probable surface current flowD.shortest great circle routes

更多“If the current and wind are in the same direction,the sea surface represents a wind speed ”相关问题

  • 第1题：

    When recording the wind direction in the weather log，you would report the ______．

    A.direction the wind is blowing toward

    B.direction the wind is blowing from

    C.duration of the maximum gust of wind

    D.wind chill factor


    正确答案：B

  • 第2题：

    A wind vane on a moving vessel shows ______.

    A.dead reckoning wind direction

    B.true wind direction

    C.apparent wind direction

    D.estimated wind direction


    正确答案：C
    运动的船上的风向标指示视风的方向。

  • 第3题：

    For determining the amount of chains used in anchoring operation, which one of the following factors would’t be considered?______.

    A.selection of landmarks

    B.character of sea bottom

    C.strength of current and wind force

    D.radius of ship swing to wind or tide


    正确答案：A
    在锚泊操作中确定锚链的长度，以下哪一项不被考虑？陆标的选择

  • 第4题：

    单选题
    For determining the amount of chains used in anchoring operation,which one of the following factors wouldn’t be considered?（）.
    A

    selection of landmarks

    B

    character of sea bottom

    C

    strength of current and wind force

    D

    radius of ship swing to wind or tide


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    On a clear，warm day，you notice the approach of a tall cumulus cloud. The cloud top has hard well defined edges and rain is falling from the dark lower edge. Should this cloud pass directly overhead（）.
    A

    it will be preceded by a sudden increase in wind speed

    B

    it will be preceded by a sudden decrease in wind speed

    C

    the wind speed will not change as it passes

    D

    the wind will back rapidly to left in a counterclockwise direction as it passes


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    If the current and wind are in the same direction，the sea surface represents a wind speed （）.
    A

    lower than actually exists

    B

    higher than actually exists

    C

    that actually exists

    D

    that has no proportional relationship


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
    A

    cloud movement

    B

    vessel heading

    C

    waves

    D

    swells


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
    A

    temperature

    B

    density

    C

    deflection

    D

    speed


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    When picking up your mooring at the buoy，the correct method is to（）.
    A

    approach the buoy with the wind and current astern

    B

    approach the buoy with the wind and current ahead

    C

    approach the buoy with wind and sea abeam

    D

    stop upwind and up current and drift down on the buoy


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    The Rules state that certain factors are to be taken into account when determining safe speed. Those factors include（）.
    A

    state of wind，sea，and current，and the proximity of navigational hazards

    B

    maximum attainable speed of your vessel

    C

    temperature

    D

    aids to navigation that are available


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.
    A

    the wind speed is greater here since the wind is traveling in the same general direction as the storm's track

    B

    the direction of the wind and seas might carry a vessel into the path of the storm

    C

    the seas are higher because of greater wind speed

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Your vessel is off a lee shore in heavy weather and laboring. Which action should you take?（）.
    A

    Put the sea and wind about two points on either how and reduce speed

    B

    Heave to in the trough of the sea

    C

    Put the sea and wind on either quarter and proceed at increased speed

    D

    Put the bow directly into the sea and proceed at full speed


    正确答案： B
    解析： 暂无解析

  • 第13题：

    The velocity of the apparent wind can be more than the true wind，and come from the same direction，if certain conditions are present．One condition is that the ______．

    A.Ship's speed must be less than the true wind velocity

    B.True wind must be from dead astern

    C.True wind velocity must be faster than the ship's speed

    D.True wind must be from dead ahead


    正确答案：D

  • 第14题：

    An anemometer on a moving vessel measures ______.

    A.apparent wind speed only

    B.true wind speed and true wind direction

    C.true wind speed only

    D.apparent wind speed and true wind direction


    正确答案：A
    在运动的船上的风速计仅测量视风（相对风）速。

  • 第15题：

    In the Northern Hemisphere a wind is said to veer when the wind ______.

    A.changes direction clockwise, as from north to east, etc

    B.changes direction counterclockwise, as from south to east, etc

    C.changes direction violently and erratically

    D.remains constant in direction and speed


    正确答案：A
    在北半球大风的风向会顺时针旋转，例如北到东。

  • 第16题：

    单选题
    Solid green arrows on the main body of a pilot chart indicate （）.
    A

    prevailing wind directions

    B

    prevailing ocean current directions

    C

    probable surface current flow

    D

    shortest great circle routes


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.
    A

    estimated position

    B

    dead reckoning position

    C

    fix

    D

    None of the above


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    In the Northern Hemisphere a wind is said to veer when the wind（）.
    A

    Changes direction clockwise，as from north to east，etc

    B

    Changes direction violently and erratically

    C

    Remains constant in direction and speed

    D

    Changes direction counterclockwise，as from south to east，etc


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    An instrument that indicates wind direction is known as a(n)（）.
    A

    weather vane，wind vane or wind sock

    B

    hydrometer

    C

    hygrometer

    D

    sling psychrometer


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should（）.
    A

    remain on course and hold speed

    B

    change course and put the stern to the wind

    C

    change course to put the wind on either beam and increase speed

    D

    remain on course but slack the speed


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    An anemometer on a moving vessel measures（）.
    A

    apparent wind speed only

    B

    true wind speed and true wind direction

    C

    true wind speed only

    D

    apparent wind speed and true wind direction


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    A wind blows round anticlockwise defines（）.
    A

    backing ( of wind )

    B

    beach ( to )

    C

    veering ( of wind )

    D

    maintaining direction of the wind


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    If the current and wind are in opposite directions，the sea surface represents（）.
    A

    a greatly reduced wind speed

    B

    a higher wind speed than what really exists

    C

    a lower wind speed than what really exists

    D

    more turbulent winds


    正确答案： C
    解析： 暂无解析

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