丙类航海英语机考大三副通用题库附答案(1)
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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
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You hear on the radiotelephone the word“Securite”spoken three times.This indicates that ().
- A.A message about the safety of navigation will follow
- B.A message of an urgent nature about the safety of a ship will follow
- C.The sender is in distress and requests immediate assistance
- D.You should secure your radiotelephone
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What is meant by the term“radio silence”().
- A.Stations not directly involved with the on-going distress communications may not transmit on the distress frequency or channel
- B.Stations remaining off the air to safeguard proprietary information
- C.Two three-minute silent periods，at 15 and 45 minutes after the hour，that provide a transmitting“window”for distressed vessels to transmit distress alerts using J3E
- D.Communications on a distress frequency or channel is banned for 24 hours following the cessation of the distress traffic
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When a vessel sees the other ahead or nearly ahead，by night she could see the masthead lights of the other in a line or nearly in a line or both side lights，()shall be deemed to exist.
- A.head-on situation
- B.end-situation
- C.crossing situation
- D.close-quarters situation
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Which signal is detected as originating from a SART ().
- A.The Morse code distress series S-O-S repeated 3 times followed by DEand 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
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The maximum draft to which a ship can legally be submerged is indicated by the ().
- A.Load Line mark
- B.Certificate of Inspection
- C.Muster List
- D.Tonnage mark
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A large angle of list can be created by which of the following ________.① Negative initial stability;② Off center weight.
- A.① only
- B.② only
- C.Either ① or ②
- D.Neither ① nor ②
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When using the hand crank on gravity davits，you should ALWAYS ()__.
- A.make sure the hand brake is disengaged
- B.put the emergency disconnect switch in the off position
- C.make sure the crank is in the locked position
- D.disconnect the limit switch
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In working out a local apparent noon sight for your latitude，you subtract the Ho from 90°.The 90° represents the angular distance from ().
- A.the equator to the elevated pole
- B.your horizon to your zenith
- C.your zenith to the elevated pole
- D.the geographical position of the Sun to the elevated pole
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Which is an indication of reserve buoyancy ().
- A.Metacentric height
- B.Righting moment
- C.Rolling period
- D.Freeboard
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What does the abbreviation VHF stand for ().
- A.Vessel's Hoisting Flag
- B.Very High Safety
- C.Vessel's Homing Frequency
- D.Very High Frequency
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When it is necessary to remove a victim from a life threatening situation，the person giving first aid must ().
- A.Pull the victim by the feet
- B.Avoid subjecting the victim to any unnecessary disturbance
- C.Carry the victim to a location where injuries can be assessed
- D.Place the victim on a stretcher before attempting removal
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The center of buoyancy is located at the ().
- A.geometric center of the waterplane area
- B.intersection of the vertical centerline and line of action of the buoyant force
- C.center of gravity of the vessel corrected for free surface effects
- D.geometric center of the displaced volume
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You are approaching another vessel and are not sure whether danger of collision exists.You must assume ()
- A.there is a risk of collision
- B.you are the give-way vessel
- C.the other vessel is the give-way vessel
- D.there is no risk of collision
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Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because ______.
- A.it is faster
- B.it can be used in both the immediate action and the delayed action situations
- C.in fog，if the turn is started as soon as the man goes over，the vessel will be at the point where he went over when the turn is completed
- D.it returns the vessel to the original track line on a reciprocal course
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The result of multiplying a weight by a distance is a ().
- A.moment
- B.force
- C.couple
- D.center of gravity location
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When the ship's bulkheads are reinforced against bending and bulging，the bulkheads are provided with ().
- A.Stanchions
- B.Girders
- C.Stiffeners
- D.Rabbits
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Any alteration of course and/or speed to avoid collision shall，if the circumstances of the case admit，()to another vessel observing visually or by radar.
- A.Be large enough to be readily apparent
- B.Be a succession of small alterations
- C.Be with due regard to the power and speed of the vessel
- D.Leave sufficient room for the other vessel to take action
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My Deratization Exemption Certificate will become ______ on the 16th of September.
- A.Due
- B.Expire
- C.Lawful
- D.Non-effective
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After the passage of a cold front the visibility ().
- A.does not change
- B.improves rapidly
- C.improves only slightly
- D.becomes poor
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When a vessel is on autopilot steering，the“weather”control is adjusted to compensate for which severe weather effect on a vessel ().
- A.Yaw
- B.Roll
- C.Pitch
- D.Leeway
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Epilepsy is a chronic nervous disorder characterized by ().
- A.Severe nausea and cramps
- B.Muscular convulsions with partial or complete loss of consciousness
- C.Sudden thirst and craving for candy
- D.Severe agitation and desire to get out of closed spaces
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When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to ().
- A.Add one hour to the times listed under the reference stations
- B.Subtract one hour from the time differences listed for the subordinate stations
- C.Apply no correction as the times in the reference stations are adjusted for daylight savings time
- D.Add 15° to the standard meridian when calculating the time difference
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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
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Hot air can hold ().
- A.less moisture than cold air
- B.more moisture than cold air
- C.the same amount of moisture as cold air
- D.moisture independent of air temperature
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What is the normal length of anchor cable used to anchor a vessel ().
- A.An amount equal to the depth of the water
- B.Two times the depth of water
- C.Three to four times the depth of water
- D.Five to seven times the depth of water
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During the day，a vessel with a tow over 200 meters in length will show ().
- A.a black ball
- B.a diamond shape
- C.two cones，apexes together
- D.one cone，apex upward
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A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line.Which of the following could you do first ().
- A.Sound one blast of the whistle
- B.Alter course to starboard
- C.Construct a radar plot
- D.Sound the danger signal
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If the gyrocompass error is east，what describes the error and the correction to be made to gyrocompass headings to obtain true headings ().
- A.The readings are too low(small numerically)and the amount of the error must be added to the compass to obtain true
- B.The readings are too low and the amount of the error must be subtracted from the compass to obtain true
- C.The readings are too high(large numerically)and the amount of the error must be added to the compass to obtain true
- D.The readings are too high and the amount of the error must be subtracted from the compass to obtain true
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An occluded front is usually caused by a ().
- A.Cold front becoming stationary
- B.Warm front becoming stationary
- C.Cold front overtaking a warm front
- D.Warm front dissipating
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The two most effective generating forces of surface ocean currents are ().
- A.temperature and salinity differences in the water
- B.wind and density differences in the water
- C.water depth and underwater topography
- D.rotation of the Earth and continental interference
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Two short blasts of the whistle have all of the following meanings EXCEPT ().
- A.I intend to meet you starboard to starboard
- B.I do not intend to hold course and speed
- C.I intend to overtake you on your port side
- D.I intend to alter my course to port
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To ensure the ship's general stability，().
- A.she's loaded a little deeper forward
- B.she's loaded a little deeper aft
- C.she has not any ballast at all
- D.the cargo is properly distributed throughout the ship
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In the horizon system of coordinates what is equivalent to latitude on the Earth ().
- A.Altitude
- B.Zenith
- C.Declination
- D.Zenith distance
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The term power-driven vessel means ()in these Rules.
- A.Any sailing vessel with propelling machinery
- B.Any vessel propelled by machinery
- C.Any sailing vessel with or without machinery for propelling
- D.Any sailing vessel with propelling machinery not in use
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By night，you sight the lights of a vessel engaged in underwater operations.If an obstruction exists on the port side of the vessel，it will be marked by ().
- A.a floodlight
- B.two red lights in a vertical line
- C.a single red light
- D.any visible lights
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Which statement about the Navigation Rules is TRUE ().
- A.The rules require vessels to comply with Traffic Separation Scheme regulations
- B.The rules use the term safe speed
- C.The Rules permit a stand-on vessel to take action prior to being in extremis.
- D.All of the above are correct
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The most important information to be obtained from a barometer is the ().
- A.difference between the reading of the two pointers，which shows wind direction
- B.last two figures of the reading of the pointer，such as 87，76，or 92
- C.present reading of the pressure，combined with the changes in pressure observed in the recent past
- D.weather indications printed on the dial(such as cold，wet，eetc.)under the poin
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You should NOT use a power tool if ().
- A.It has a three-prong plug
- B.The insulation of the power wires is worn
- C.Hand tools can be used instead
- D.The power source is alternating current
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The abbreviation PPI in the Sperry Collision Avoidance System means ().
- A.Plan position indicator
- B.Plain position indicator
- C.Plane position indication
- D.Policy proof of interest
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When the height of the metacenter has the same value as the height of the center of gravity，the metacentric height is equal to ().
- A.The height of the metacenter
- B.The height of the center of gravity
- C.The same as half the height of the metacenter
- D.Zero
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() refers to the angle between true North and the heading line of the ship
- A.True position
- B.True meridian
- C.True course
- D.True bearing
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How many life buoys ()on board with self-igniting light ().
- A.there exist
- B.there is
- C.there are
- D.are there
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Overhauling a fire in the living quarters on a vessel must include ().
- A.opening dead spaces to check for heat or fire
- B.evacuation of the vessel
- C.sounding the “all clear” signal
- D.operation of the emergency generator
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Which of the following will increase the height of the center of buoyancy for your vessel ().
- A.Discharging weight from lower decks
- B.Loading weight in upper decks
- C.Shifting weight from lower to upper decks
- D.Shifting weight from upper to lower decks
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Which correction(s)must be applied to an aneroid barometer ().
- A.Instrument error and height error
- B.Instrument error only
- C.Height error only
- D.Instrument error and latitude correction
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The light characteristic of composite group flashing(2 + 1)is used in the Aids to Navigation System on the Western Rivers for lights on ().
- A.the right descending bank
- B.the left descending bank
- C.preferred-channel buoys
- D.daymarks with no lateral significance
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A record of the types and strengths of steels used on a ship must be included in the ______.
- A.General plans
- B.Builder's documentation
- C.Certificate of Inspection
- D.Construction portfolio
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When taking action to avoid collision，you should ().
- A.Make sure the action is taken in enough time
- B.Not make any large course changes
- C.Not make any large speed changes
- D.All of the above
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Your vessel is not underway when ().
- A.Her anchor is dragging
- B.Her anchor is used in docking
- C.She is dredging her anchor
- D.Her anchor holds fast while she is swinging