1.In considering the echo principle which of following do not aist in a preliminary understanding of radar detection____ A.The echo will become weak after being blasted.
B.the chance of detecting an echo depends on the loudne and duration of the secondary blast.
C.Short blasts are required if echoes from close targets are kept receivable.
D.A sufficiently long interval between blasts is required to permit the reception of return echo.2. LRIT is designed to collect and ____ veel position information received from IMO member states ships.
A.eliminate B.coordinate
C.aemble
D.dieminate 3.When the transmiions of a radio station have broken down，switched off or suspended，it is ___ A.Unfunctional B.Break down C.Off power D.Off air 4.Admiralty Tide Tables are published in ___ volumes annually.
A.3 B.4
C.6
D.12 5.cloud form__
A.as a ma of warm humid air ma rises into the atmosphere and cools ，condensing moisture into small droplets.
B.as winds blow acro bodies of water， the sun causes the moisture to be absorbed and move upward forming clouds.
C.dry air comprees moisture from the atmosphere into clouds.
D.when the relative humidity of the atmosphere is low.6.The documents used to describe and implement the SMS may be referred to as the __ A.International Safety Management
B.Safety Management Certificate C.SMS
D.Safety Management Manual课本原句
7.In order to pay out or slack a mooring line which is under strain，you should ____. A.stopper the line B.surge the line C.sluice the line
D.slip the line 8.Permanent magnetism is found in ___ A.hard iron
B.soft iron
C.vertical iron only D.horizontal iron only
9.The “Mode” selector switch on the autopilot steering stand is used to select any of the following with the EXCEPTION of ______.A.automatic pilot steering
B.hand-electric steering C.non-follow-up steering
D.rudder adjustment 10.Admiralty standard nautical charts are ideal for the following usages except for___ A.fix positions B.avoid dangers C.plot courses D.prediction tides 11.A warm air ma is characterized by ___.A.Stability
B.instability
C.gusty winds
D.good visibility 12.At temperate latitudes cyclonic and anticyclonic preure system generate more ___ weather patterns.
A.variable
B.steady C.slow D.temporary 13.Compa error is equal to the ___ A.deviation minus variation
B.variation plus compa course C.combined variation and deviation
D.difference between true and magnetic heading 14.Full details of chart updating methods can be found in ____
A.NP100 B.NP350
C.NP294 课本原句
D.NP72 15.Hurricane may move in any direction.However, it is rare and generally of short duration when a hurricane in the northern Hemisphere moves toward the ____.
A.west or northwest
B.northeast
C.southeast
D.north 16. If you need the information for Radio Weather Services, you may check the Admiralty List of Radio Signals_____.A.volume 2
B.volume3
C.volume5
D.volume6 17.In Admiralty Sailing Directions, heights of objects refer to the height of the structure above the_
A.mean sea level
B.Mean high water
C. Mean higher high water D.ground 18.Radar beacons are transmitters designed to produce a(n)___ on the screens of ship’s radar sets.
A.incorrect image
B. distinctive image C.pictorial image D.pictographic image 19.Spontaneous combustion can result from____
A.an unprotected drop-light bulb
B.carele disposal or storage of material
C.smoking in bed
D.worn electrical wire power tools.20.The Safety Management Certificate should be iued to a ship by___.
A.the entity
B.the owner of the ship
C.the Administration or organization recognized by the Administration 21.The sailing Directions contain information on ___.
A.required navigation lights
B. lifesaving reporting procedures
C.casualty reporting procedures D.currents in various locations 22.If you need the information for weather routing, you may check __.
A.Admiralty Tide Tables B.Ocean Paage for the world
C.Admiralty List of Radio Signals D.Admiralty Sailing Directions 23.When a curren flows in the opposite direction to the waves, the wave___
A.length is increased
B.height is increased C.velocity increase D.length is unchanged 24.The fireman\'s outfit consists of________.A.Safety lamp, protective clothing, rigid helmet, breathing apparatus B.Emergency escape breathing device, fire damper, extinguishers C.Firefighting equipment, portable extinguishers, fire dampers D.Fire hoses, ire nozzles, fire hydrants, fire pumps 25.The information stored in the VDR concerning position, movement, physical status, command and control of a veel is ___.
A.recyclable
B.returnable
C.recoverable
D.retrievable
26.The most significant consequence for the veel resulting from liquefaction is ___.
A.cargo lo
B.cargo shift
C.cargo distribution D.cargo reduction
27.The overtaken as well as the overtaking veel are ___ obligated to act to avoid collision in restricted visibility.A.distinctly
B.separately
C.equally
D.similarly 28.Which statement is true concerning combustible gas indicator?
D.the organization or person such as the Manager, or the Bare boat Charterer
A.one sample of air is adequate to test a tank
B.the do not work properly where there is a lack of oxygen
C.the will detect a lack of oxygen
D.they are calibrated to read the percentage chance of explosion.29.Which type of precipitation is a product of the violent convection found in thunderstorm?
A.snow
B.freezing rain C.hail
D.sleet
30.The routing system which aims at reducing the risk of casualties is called as__.
A.Traffic Separation Scheme B.Precautionary areas
C. Inshore traffic zone
D.Recommended tracks 31.Which kind of fog is also named as ground fog.
A.Advection fog
B.Radiation fog
C.frontal fog D Steam fog 32.The time worked beyond regular hours is expreed in term of ___.
A.timeover
B.timeout C.overtime D.outtime 33.Normally the mariners care more about the ___ of tide.
A.speed
B.height
C.direction
D.course 34.___ cargoes in IMSBC code are those that likely to liquefy.
A.Group A
B.GroupB
C.GroupC
D.GroupD 35.which of the following should not be paid attention to as to accommodation for seafarers?
A.The size of rooms and other accommodation spaces
B.communication
C.Heating and ventilation
D.Noise and vibration and other ambient factors 36.On the pole side of the trade wind belt, there is an area of high preure with weak preure gradient and light variable wind.This area is called the __.
A.prevailing westerlies
B.doldrums
C.geostrophic winds D.horse latitude 37. Mainly east 3or 4 partly cloudy to overcast occasional rain＿＿Slowly south moderate or good.A.spreading
B.proceding
C.bounding for
D.going to 38.Regarding the use of GPS, which one of the followings is incorrect? A.GPS is the most accurate global system today.B.Its use is still under the U.S.Department of Defence\'s control C.DGPS is more accurate than GPS
D.GPS can provide a real-time position under any condition
