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
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
相关考题：
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
The best time to work a boat into a slip is ______.A.when the wind is against youB.with the current setting against youC.at slack waterD.with a cross current
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
Tensile stress is a result of two forces acting in ______.A.opposite directions on the same line，tending to pull the material apartB.opposite directions on the same line，tending to compress the objectC.opposite directions along parallel linesD.the same direction along parallel lines
A sea anchor is ______.A.a heavy anchor with an extra long line used to anchor in deep waterB.a cone shaped bag used to slow down the wind drift effectC.a pad eye to which the sea painter is made fastD.made of wood if it is of an approved type
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
Oil slick caused by spillage of oil from tanker ship is ______.A.a drop of oilB.the emulsion of oil at sea surfaceC.the weathered oilD.the oil floating on the surface of the sea water
______ is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature．A.MIXING FOGB.ADVECTION FOGC.RADIATION FOGD.ARCTIC SEA SMOKE
For determining the amount of chains used in anchoring operation, which one of the following factors would’t be considered?______.A.selection of landmarksB.character of sea bottomC.strength of current and wind forceD.radius of ship swing to wind or tide
共用题干第二篇Hurricane（咫风）KatrinaA hurricane is a fiercely powertul , rotating（旋转的）form of tropical storm that can be 124 to 1,240 miles in diameter. The term hurricane is derived from Hurican,the name of a native American storm god.Hurricanes are typical of a calm central region of low pressure between 12 to 60 miles in diameter,known as the eye.They occur in tropical regions. Over its lifetime,one of these storms can release as much energy as 10,000 nuclear bombs.The seed for hurricane formation is a cluster（聚集）of thunderstorms over warm tropical waters.Hurricanes can only form and be fed when the sea-surface temperature exceeds 27℃ and the surrounding atmosphere is calm.These requirements are metbetween June and November in the northern part of the world.Under these conditions, large quantities of water evaporate（蒸发）and condense（冷凝）into clouds and rain-releasing heat in the process.It is this heat energy,combined with the rotation of the Earth,that drives a hurricane.When the warm column of air from the sea surface first begins to rise,it causes an area of low pressure.This in turn creates wind as air is drawn into the area.This spinning wind drags up more moist air from the sea surface in a process that strengthens the storm.Cold air falls back to the ocean surface through the eye and on the outside of the storm.Initially,when wind speeds reach 23 miles per hour,these mild,wet and grey weather systems are known as depressions,or low air pressure.Hurricane Katrina formed in this way over the south-eastern Bahamas on 23 August 2005.Katrina has had a devastating impact on the Gulf Coast of the US,leaving a disaster zone of 90,000 square miles in its wake（尾迹）一almost the size of the UK. Thousands have been killed or injured and more than half a million people have become homeless in a humanitarian（人道主义的）crisis of a scale not seen in the US since the Great Depression.The cost of the damage may top $100 billion.When the warm air from the sea surface begins to rise,itA:creates an area of low pressure.B:supplies cold air to the eye of a hurricane.C:increases the sea-surface temperature.D:strengthens the rotation of the earth.
单选题For determining the amount of chains used in anchoring operation,which one of the following factors wouldn’t be considered?（）.Aselection of landmarksBcharacter of sea bottomCstrength of current and wind forceDradius of ship swing to wind or tide
单选题Solid green arrows on the main body of a pilot chart indicate （）.Aprevailing wind directionsBprevailing ocean current directionsCprobable surface current flowDshortest great circle routes
单选题You are docking a vessel．Wind and current are most favorable when they are（）.Acrossing your course in the same directionBcrossing your course in opposite directionsCparallel to the pier from aheadDsetting you on the pier
单选题If the current and wind are in the same direction，the sea surface represents a wind speed （）.Alower than actually existsBhigher than actually existsCthat actually existsDthat has no proportional relationship
单选题The steady current circling the globe at about 60°S is the（）.APrevailing WesterlyBSub-Polar FlowCWest Wind DriftDHumboldt Current
单选题A sea breeze is a wind（）.Athat blows towards the sea at nightBthat blows towards an island during the dayCcaused by cold air descending a coastal inclineDcaused by the distant approach of a hurricane
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（）.AtemperatureBdensityCdeflectionDspeed
单选题The average height of the surface of the sea for all stages of the tide over a 19 year period is called（）.Amean high waterBmean low waterChalf-tide levelDmean sea level
单选题The result of two forces acting in opposite directions and along parallel lines，is an example of what type of stress?（）ATensileBCompressionCShearDStrain
单选题The best time to work a boat into a slip is（）.Awhen the wind is against youBwith the current setting against youCat slack waterDwith a cross current
单选题When picking up your mooring at the buoy，the correct method is to（）.Aapproach the buoy with the wind and current asternBapproach the buoy with the wind and current aheadCapproach the buoy with wind and sea abeamDstop upwind and up current and drift down on the buoy
单选题（）is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature.AMIXING FOGBADVECTION FOGCRADIATION FOGDARCTIC SEA SMOKE
单选题The Rules state that certain factors are to be taken into account when determining safe speed. Those factors include（）.Astate of wind，sea，and current，and the proximity of navigational hazardsBmaximum attainable speed of your vesselCtemperatureDaids to navigation that are available
单选题If the current and wind are in opposite directions，the sea surface represents（）.Aa greatly reduced wind speedBa higher wind speed than what really existsCa lower wind speed than what really existsDmore turbulent winds
单选题Your vessel is off a lee shore in heavy weather and laboring. Which action should you take?（）.APut the sea and wind about two points on either how and reduce speedBHeave to in the trough of the seaCPut the sea and wind on either quarter and proceed at increased speedDPut the bow directly into the sea and proceed at full speed