A radar range to a small，charted object such as a light will provide a line of position in which form?A.Straight lineB.ArcC.ParabolaD.Hyperbola

题目

A radar range to a small，charted object such as a light will provide a line of position in which form?

A.Straight line

B.Arc

C.Parabola

D.Hyperbola

相似考题

1.On small scale charts of ocean areas where hydrographic information is，in many cases，still sparse，charted shoals may be in error as regards______．A.positionB.position，depth and extentC.depth and extentD.position and extent

2.when you are steering on a pair of range lights and find the upper light is in line above the lower light ,you should _____.A.continue on the present courseB.come rightC.wait until the lights are no longer in a vertical lineD.come left

3.A line of position derived by radar range from an identified point on a coast will be a(n) ______.A.straight lineB.arcC.parabolaD.line parallel to the coast

4.The common way to obtain your ship’s position is ______.A.keeping a close watch and lookoutB.taking a radar range and bearingC.observing a radar target and listening to signalsD.keeping a well clear caution

更多“A radar range to a small,charted object such as a light will provide a line of position in ”相关问题

  • 第1题：

    A true bearing of a charted object，when plotted on a chart，will establish a ______.

    A.fix

    B.line of position

    C.relative bearing

    D.range


    正确答案：B

  • 第2题：

    What provides little or no indication that a vessel is dragging anchor ________．

    A.Increasing radar range to a fixed object ahead

    B.Drift lead with the line leading perpendicular to the centerline

    C.Vibrations felt by placing a hand on the cable

    D.Changing bearings to distant fixed objects abeam


    正确答案：B

  • 第3题：

    单选题
    The common way to obtain your ship’s position is（）.
    A

    keeping a close watch and lookout

    B

    taking a radar range and bearing

    C

    observing a radar target and listening to signals

    D

    keeping a well clear caution


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    A line of position derived by radar range from an identified point on a coast will be a(n) （）.
    A

    straight line

    B

    arc

    C

    parabola

    D

    line parallel to the coast


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    A navigator fixing a vessel’s position by radar （）.
    A

    can use radar information from one object to fix the position

    B

    should never use radar bearings

    C

    should only use radar bearings when the range exceeds the distance to the horizon

    D

    must use information from targets forward of the beam


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    A line of position formed by sighting two charted objects in line is called a(n)（）.
    A

    relative bearing

    B

    range line

    C

    track line

    D

    estimated position


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    A line of position is（）.
    A

    a line connecting two charted objects

    B

    a line on some point of which the vessel may be presumed to be located

    C

    the position of your vessel

    D

    not used in a running fix


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    The 3-cm radar as compared to a 10-cm radar with similar specifications will（）.
    A

    give better range performance in rain，hail，etc

    B

    display small targets in a mass of dense sea clutter at a greater range

    C

    have less sea return in choppy rough seas

    D

    display a more map like presentation for inshore navigation


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    The irregular black line around a charted light such as Race Rock Light indicates that it is （）.
    A

    unwatched

    B

    surrounded by riprap

    C

    a minor light

    D

    constructed on an artificial island


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    What provides little or no indication that a vessel is dragging anchor? （）
    A

    Increasing radar range to a fixed object ahead

    B

    Drift lead with the line leading perpendicular to the centerline

    C

    Vibrations felt by placing a hand on the cable

    D

    Changing bearings to distant fixed objects abeam


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    A piece of small stuff (small line) secured to an object to prevent it from going adrift is a（）.
    A

    lanyard

    B

    keeper

    C

    noose

    D

    stopper


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    A radar range to a small，charted object such as a light will provide a line of position in which form? （）
    A

    Straight line

    B

    Arc

    C

    Parabola

    D

    Hyperbola


    正确答案： B
    解析： 暂无解析

  • 第13题：

    The irregular black line around a charted light such as Race Rock Light indicates that it is ______.

    A.unwatched

    B.surrounded by riprap

    C.a minor light

    D.constructed on an artificial island


    正确答案：B

  • 第14题：

    In determining the scope of anchor line to pay out when anchoring a small boat, one must consider the ______.

    A.charted depth of water only

    B.depth of water, including tidal differences

    C.time and date of anchoring

    D.type of anchor being used


    正确答案：B
    小船抛锚，在确定送出锚链长度时，必须考虑包括潮汐不同的水深。

  • 第15题：

    单选题
    There is a possibility that small vessel，ice and other floating objects may not be（）by radar at an adequate range.
    A

    reflect

    B

    shown

    C

    detected

    D

    defected


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    What is the name of the movable，radial guide line used to measure direction on a radar?（）
    A

    Compass rose

    B

    Cursor

    C

    Plan position indicator

    D

    Variable range marker


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    Which signal is detected as originating from a SART?（）
    A

    The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign

    B

    A line of blip code on a radar screen outward from the SART's position along its line of bearing

    C

    A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing

    D

    None of these


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    When using a buoy as an aid to navigation which of the following should be considered?（）
    A

    The buoy should be considered to always be in the charted location

    B

    If the light is flashing，the buoy should be considered to be in the charted location

    C

    The buoy may not be in the charted position

    D

    The buoy should be considered to be in the charted position if it has been freshly painted


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    What is TRUE when operating in fog and other vessels are detected by radar?（）
    A

    you should make an ample change to port for a vessel crossing on the starboard bow

    B

    You should maneuver in ample time if a close-quarters situation is developing

    C

    You should determine the course and speed of all radar contacts at six minutes intervals

    D

    Long-range scanning will provide early warning of all other vessels within the radar’s range


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Small floes of rough，hummocky sea ice capable of damaging a vessel（）.
    A

    can usually be detected by radar in a smooth sea at a range of 4 to 6 kilometers

    B

    are indistinguishable from sea return on the PPI

    C

    are invisible to radar when covered with a thick layer of snow

    D

    are usually seen at night before they are close enough to provide a radar echo


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    What does a SART signal sound or look like?（）
    A

    It transmits SOS and the vessel's name and position in slow speed Morse Code

    B

    It will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's position

    C

    It will appear on a radar unit's PPI as a line of dots radiating outward with the outermost dot indicating the SART's position

    D

    None of the above


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    If there is any doubt as to the proper operation of a radar，which statement is TRUE?（）.
    A

    Only a radar expert can determine if the radar is operating

    B

    All radars have indicator lights and alarms to signal improper operation

    C

    A radar range compared to the actual range of a known object can be used to check the operation of the radar

    D

    The radar resolution detector must be energized to check the radar


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    When using the radar for navigating（）.
    A

    the best fix is obtained by using a tangent bearing and a range

    B

    and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings

    C

    and using ranges，the most rapidly changing range should be measured last

    D

    and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart


    正确答案： C
    解析： 暂无解析

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