Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．A.barometerB.wind vaneC.anemometerD.Thermometer
Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．
A.barometer
B.wind vane
C.anemometer
D.Thermometer
相关考题：
29． Why are green plants and grass helpful?A． Because they can hold the water．B． Because they can stop the wind from blowing the earth away．C． Because they can keep the earth wet．D．All the above．
A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?A.When the towing vessel enters the fogB.When the drilling rig enters the fogC.When the towing vessel can no longer be seen from the rigD.Immediately
THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is ______.A.Ground speedB.Boarding speedC.Relative speedD.Speed of the vessel
A semisubmersible rig under tow should be ballasted down if ______.A.motion begins to be excessiveB.water begins to break over the pontoonsC.period of roll exceeds 12 secondsD.forward progress is halted by head wind
When cargo aboard a jack-up in transit becomes adrift，the tow vessel should be asked to ______.A.turn into the seasB.turn to be parallel to the seasC.reduce speedD.increase speed
When recording the wind direction in the weather log，you would report the ______．A.direction the wind is blowing towardB.direction the wind is blowing fromC.duration of the maximum gust of windD.wind chill factor
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 velocityB.True wind must be from dead asternC.True wind velocity must be faster than the ship's speedD.True wind must be from dead ahead
A wind vane on a moving vessel shows ______.A.dead reckoning wind directionB.true wind directionC.apparent wind directionD.estimated wind direction
An anemometer on a moving vessel measures ______.A.apparent wind speed onlyB.true wind speed and true wind directionC.true wind speed onlyD.apparent wind speed and true wind direction
单选题When evacuating a seaman by helicopter lift，the vessel should be（）.Astopped with the wind dead aheadBstopped with the wind on the beamCunderway with the wind 30°on the bowDunderway on a course to provide no apparent wind
单选题When cargo aboard a jack-up in transit becomes adrift，the tow vessel should be asked to （）.Aturn into the seasBturn to be parallel to the seasCreduce speedDincrease speed
单选题A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）AWhen the towing vessel enters the fogBWhen the drilling rig enters the fogCWhen the towing vessel can no longer be seen from the rigDImmediately
单选题Apparent wind speed blowing across a ship under tow can be measured by a(n)（）.AbarometerBwind vaneCanemometerDthermometer
单选题When recording the wind direction in the weather log，you would report the（）.Adirection the wind is blowing towardBdirection the wind is blowing fromCduration of the maximum gust of windDwind chill factor
单选题A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.Aestimated positionBdead reckoning positionCfixDNone of the above
单选题The apparent wind can be zero when the true wind is from（）.Aahead and equal to the ship's speedBastern and equal to the ship's speedCahead and equal to twice the ship's speedDastern and equal to twice the ship's speed
单选题A vessel towing where the tow prevents her from changing course shall carry（）.Aonly the lights for a vessel towingBonly the lights for a vessel restricted in her ability to maneuverCthe lights for a towing vessel and the lights for a vessel restricted in her ability to maneuverDthe lights for a towing vessel and the lights for a vessel not under command
单选题There is a fire aft aboard your vessel. To help fight the fire，you should（）.Aput the wind off either beamBhead the bow into the wind and decrease speedCput the stern into the wind and increase speedDput the stern into the wind and decrease speed
单选题If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to（）.Achange courseBslow downCheave toDadjust tow line length
单选题In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.Ashock loading on the tow line is reduceBtowing speed is improvedCthe vessel is more visible from the tugDthe catenary of the tow line is reduced
单选题Every vessel should at all times proceed at a safe speed. Safe speed is defined as that speed where（）.Ayou can stop within your visibility rangeByou can take proper and effective action to avoid collisionCyou are traveling slower than surrounding vesselsDno wake comes from your vessel
单选题An anemometer on a moving vessel measures（）.Aapparent wind speed onlyBtrue wind speed and true wind directionCtrue wind speed onlyDapparent wind speed and true wind direction
单选题Apparent wind speed blowing across a vessel under tow can be measured by a(n)（）.AbarometerBwind vaneCanemometerDthermometer
单选题The apparent wind’s speed can be zero only when two conditions are present. One condition is that the true wind（）.Amust be from dead aheadBspeed must be zeroCmust be from dead asternDmust be on the beam
单选题A vessel engaged in replenishment or transferring persons，provisions or cargo while under way can be regarded as（）.Aa vessel restricted in her ability to maneuverBa vessel engaged in laying，serving or picking up a navigation mark，submarine cable or pipelineCa vessel not under commandDa power-driven vessel
单选题In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.Athe wind speed is greater here since the wind is traveling in the same general direction as the storm's trackBthe direction of the wind and seas might carry a vessel into the path of the stormCthe seas are higher because of greater wind speedDAll of the above
单选题A semisubmersible rig under tow should be ballasted down if（）.Amotion begins to be excessiveBwater begins to break over the pontoonsCperiod of roll exceeds 12 secondsDforward progress is halted by head wind