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prolonged blast（）
- A、短声
- B、短笛
- C、长笛
- D、长声
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更多 “prolonged blast（）A、短声B、短笛C、长笛D、长声” 相关考题
考题
You are on international waters during a heavy rainstorm and hear a vessel sounding a fog signal of one prolonged blast followed by two short blasts． Which of the following could it be？Ⅰ．A vessel laying submarine cable making way．Ⅱ．A pilot vessel on station at anchor．A.Ⅰ onlyB.Ⅱ onlyC.Either Ⅰ or ⅡD.Neither Ⅰ nor Ⅱ
考题
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a ______.A.vessel being towedB.fishing vessel engaged in trawlingC.vessel at anchor warning you of her locationD.power-driven pilot vessel on station underway
考题
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound ______.A.a 2-second blast every 20 secondsB.a 4-second blast every 20 secondsC.an 8-second blast every 30 secondsD.a 10-second blast every 30 seconds
考题
单选题The wind is ESE，and a sailing vessel is steering NW. Which fog signal should she sound?（）A
One blast at one-minute intervalsB
One blast at two-minute intervalsC
Two blasts at one-minute intervalsD
One prolonged and two short blasts at two-minute intervals
考题
单选题The duration of a prolonged blast of the whistle is（）.A
2 to 4 secondsB
4 to 6 secondsC
6 to 8 secondsD
8 to 10 seconds
考题
单选题You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen．You should sound（）.A
one blast，4 to 6 seconds in durationB
three blasts，4 to 6 seconds in durationC
one continuous blast until you are able to see around the bendD
one blast，8 to 10 seconds in duration
考题
单选题On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.A
vessel being towedB
fishing vessel engaged in trawlingC
vessel at anchor warning you of her locationD
power-driven pilot vessel on station underway
考题
单选题Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should （）.A
back your enginesB
stop your engines and driftC
answer with one prolonged blastD
sound the danger signal
考题
单选题If you do NOT understand the course or intention of an approaching vessel you should sound （）.A
one short blastB
one prolonged blastC
not less than five short blastsD
not less than five prolonged blasts
考题
单选题You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.A
TowingB
Engaged on pilotage dutyC
Aground in a fairwayD
Stopped and making no way through the water
考题
单选题While underway，in fog，you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel（）.A
not under commandB
being towedC
on pilotage dutyD
aground
考题
单选题A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.A
no fog signalB
one short blastC
one prolonged and three short blastsD
one prolonged，one short，and one prolonged blast
考题
单选题You are Master of a towing vessel engaged in towing three barges astern.The middle barge of the tow would be required to sound which of the following during restricted visibility （）.A
No fog signalB
A prolonged blast at intervals never to exceed more than two minutesC
A prolonged blast followed by two short blasts at intervals never to exceed more than two minutesD
A prolonged blast followed by three short blasts at intervals never to exceed more than one minute
考题
单选题Approaching an anchorage in fog，you hear one short，one prolonged，and one short blast in that sequence on a ship’s whistle． This indicates（）.A
A vessel towedB
A vessel not under command and unable to maneuverC
A vessel anchored giving warning of her positionD
A vessel stopped dead in the water
考题
单选题You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should（）.A
hold course and sound a two blast whistle signalB
hold course and sound no whistle signalC
change course to the right and sound one blastD
hold course and sound two prolonged and two short blasts
考题
单选题（）, which consisted of seven short blasts and one prolonged blast, all passengers have to go to their assembly station.A
When the distress alert is soundedB
When the emergency equipment is switching onC
When the general emergency alarm is soundedD
When the distress broadcast is sounded
考题
单选题A fog signal consisting of one prolonged blast followed by four short blasts would indicate thepresence of a（）.A
vessel being towedB
fishing vessel engaged in trawlingC
vessel at anchor warning of her locationD
power-driven pilot vessel on station underway
考题
单选题A vessel sounding a fog signal of one short，one prolonged，and one short blast is indicating that the vessel is（）.A
fishingB
in distressC
at anchorD
not under command
考题
单选题A whistle signal of one prolonged，one short，one prolonged and one short blast，is sounded by a vessel（）.A
at anchorB
towing a submerged objectC
being overtaken in a narrow channelD
in distress
考题
单选题A 95-meter vessel aground sounds which fog signal? （）A
A rapid ringing of a bell for 5 seconds every two minutesB
A whistle signal of one short，one prolonged，and one short blastC
A prolonged blast of the whistle at intervals not to exceed one minuteD
A rapid ringing of a bell for 5 seconds，preceded and followed by three separate and distinct strokes on the bell
考题
单选题The term PROLONGED BLAST refers to（）.A
a blast of from five to seven seconds' durationB
a blast of from five to six seconds' durationC
a blast of from four to six seconds' durationD
a blast of from six to seven seconds' duration
考题
单选题A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.A
displaying code letter Y (Yankee)B
sounding five short blasts on his whistleC
displaying code numeral 5D
sounding one prolonged blast on his whistle
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