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单选题
Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.
A
obscured
B
darkened
C
greyed
D
delighted
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You see only the thin blue haze like smoke, () is the dividing line between the heavens and the earth.
A.in whichB.thatC.whichD.where
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A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE?A.During the day，she would display three balls in a vertical lineB.If making way，she would show masthead lights at nightC.If at anchor，she need not show anchor lights while displaying identifying lightsD.Her fog signal would consist of a rapid ringing of a bell for five seconds every minute
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______ 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
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Haze is not caused by ______．A.forest firesB.smoke from industrial areasC.dust or sand stormsD.water droplets with the relative humidity more than 95%
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共用题干
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跑道边灯应为固定灯具，显示可变的白光。（）A、Runway edge lights shall be fixed lights showing variable white.B、Runway middle lights shall be fixed lights showing variable white.C、Runway edge lights shall be fixed lights showing vary white.D、Taxiway edge lights shall be fixed lights showing variable white.
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单选题The international number，location and/or name，geographical co-ordinates，characteristics and intensity，elevation in metres，range in sea miles and description of structure of a light can be found in（）.A
Ocean Passages for the WorldB
Admiralty List of Radio SignalsC
IALA Maritime Buoyage SystemD
Admiralty List of Lights and Fog Signals
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单选题What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.A
Mention signal stations and ice，storm，traffic and port signalsB
Give the international numbers of lightsC
Give the correction of the lights and fog signalsD
Give the information on the lights and fog signals
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单选题A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE? （）A
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If making way，she would show masthead lights at nightC
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Her fog signal would consist of a rapid ringing of a bell for five seconds every minute
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单选题The fog most commonly encountered at sea is called（）.A
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radiation fogC
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fight an electrical fireB
fight a magnesium fireC
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All of the above
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单选题Full details of all lights and fog signals are shown on（）.A
large scale chartB
small scale chartC
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单选题A high-velocity fog stream can be used in fire fighting situations to drive heat and smoke ahead of the fire fighters in a passageway. This technique should only be used when（）.A
using a 2-1/2 inch hoseB
there is an outlet for the smoke and heatC
the fire is totally contained by the ship's structureD
at least two fog streams can be used
考题
单选题A vessel towing where the tow prevents her from changing course shall carry（）.A
only the lights for a vessel towingB
only the lights for a vessel restricted in her ability to maneuverC
the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuverD
the lights for a towing vessel and the lights for a vessel not under command
考题
单选题Section V of the ADMIRALTY NOTICES TO MARINERS is（）.A
Reprints of Radio Navigational WarningsB
Amendments to Admiralty Sailing DirectionsC
Amendments to Admiralty Lists of Lights and Fog SignalsD
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考题
单选题Which kind of fog is also named as ground fog?（）A
AdvectionB
Radiation fogC
frontal fogD
Steam fog
考题
单选题（）gives listings of all lighthouses，lightships，lit floating marks（over 8m in height），fog signals and lights of navigational significance.A
Ocean Passages for the WorldB
Admiralty List of Radio SignalsC
IALA Maritime Buoyage SystemD
Admiralty List of Lights and Fog Signals
考题
单选题（）is not contained in the NM Weekly.A
Amendments to Admiralty Sailing DirectionsB
Amendments to Admiralty List of Lights and Fog SignalsC
Amendments to Admiralty List of Radio SignalsD
Supplement to Guide to Port Entry
考题
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.A
MIXING FOGB
ADVECTION FOGC
RADIATION FOGD
ARCTIC SEA SMOKE
考题
单选题—______ will the fog and haze last?—I’ve no idea. There is no sign of an end.A
How soonB
How farC
How longD
How often
考题
单选题Uncharted lights, fog signals and radar beacon transmissions may be（）near the station.A
encounteredB
metC
contactedD
seen
考题
单选题The Coast Radio Stations are found in（）.A
Admiralty List of Lights and Fog SignalsB
Admiralty Maritime CommunicationsC
Admiralty List of Radio SignalsD
Admiralty Digital List of Lights
考题
单选题An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.A
carbon dioxideB
Halon 1301C
dry chemicalD
water fog
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