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单选题
A light signal consisting of three flashes means （）.
A
I am in doubt as to your actions
B
My engines are full speed astern
C
I desire to overtake you
D
I am operating astern propulsion
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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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单选题The Coordinator Surface Search（CSS）in a SAR situation should display by night（）.A
Deck lights forward and aftB
A white light over two red lightsC
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单选题At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.A
in distressB
approaching a bend in the channelC
operating astern propulsionD
intending to overtake another vessel
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单选题A flashing light is a light that（）.A
flashes at regular intervals at a frequency of 120 flashes or more per minuteB
is yellow in colorC
is visible over an arc of the horizon of not less than 180°nor more than 225°D
All of the above
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单选题A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.A
white lights are not usedB
red and green lights are not usedC
the signal cannot be mistaken for a signal authorized by the RulesD
the vessel signals such intentions over the radiotelephone
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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
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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单选题Radio, television and press are ______ of conveying news and information.A
the most three common means B
the most common three meansC
the three most common means D
three the most common means
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单选题If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left，you would（）.A
fire a green star to the leftB
send the letter K by light and point to the leftC
place an orange signal to your left as you signal with a white lightD
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单选题Which is NOT a distress signal? （）A
A continuous sounding with any fog signal apparatusB
A signal sent by radiotelephone consisting of the spoken word MaydayC
An International Code Signal of N.C.D
The firing of green star rockets or shells
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单选题Which signal is recognized as a distress signal?（）.A
Directing the beam of a searchlight at another vesselB
A smoke signal giving off orange colored smokeC
A whistle signal of one prolonged and three short blastsD
International Code Signal PAN spoken over the radiotelephone
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单选题A list signal of one white light indicates that the vessel is （）.A
on an even keelB
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listing over 5° With the light displayed on the high sideD
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单选题Which is NOT a distress signal?（）A
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单选题On navigational aids，what does the light characteristic Fl(2+1) mean?（）A
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Light flashes combined in groups，with a different number of flashes in each groupC
A light showing groups of two or more flashes at regular intervalsD
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单选题A light used to signal passing intentions must be an（）.A
alternating red and yellow lightB
alternating white and yellow lightC
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all-round white light only
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单选题The word“shine in Paragraph 3 means“ _______”A
do wellB
reflect lightC
look happyD
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考题
单选题A light used to signal passing intentions must be an （）.A
all-round yellow light onlyB
all-round white light onlyC
all-round blue light onlyD
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考题
单选题The period of a lighted aid to navigation refers to the（）.A
date of construction or establishmentB
length of time between flashes of the lightC
time required for the longest flash of each cycleD
time required for the light to complete each cycle
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