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In order to insure that the racon signal is visible on your 3 cm radar, the ______.
A.10 cm radar should be placed on stangby or turned off
B.gain control should be turned to maximum
C.radar should be stabilized, head up
D.rain clutter control should be off but, if necessary, may be on low
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更多 “ In order to insure that the racon signal is visible on your 3 cm radar, the ______.A.10 cm radar should be placed on stangby or turned offB.gain control should be turned to maximumC.radar should be stabilized, head upD.rain clutter control should be off but, if necessary, may be on low ” 相关考题
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The 10-cm radar as compared to a 3-cm radar of similar specifications will ______.A.be more suitable for river and harbor navigationB.provide better range performance on low lying targets during good weather and calm seasC.have a wider horizontal beam widthD.have more sea return during rough sea conditions
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What is the purpose of the radar reflector?__________.A.Making objects less visibleB.Making echoes weaker on the radarC.Making large echoes smailerD.Making small objects better visible
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“喷射井点”适用土的渗透系数是()。A.10—10—Cm／sB.10—9Cm／sC.
“喷射井点”适用土的渗透系数是()。A.10—10—Cm/sB.10—9Cm/sC.D.10—Cm/s
考题
________is the most visible signal of distress from a lifeboat at sea in the daytime.A.Smoke signalB.Flash signalC.Fire signalD.Radio emergency transmission
考题
The description Racon beside an illustration on a chart would mean a ______.A.radar conspicuous beaconB.circular radiobeaconC.radar transponder beaconD.radar calibration beacon
考题
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 whistleB.Alter course to starboardC.Construct a radar plotD.Sound the danger signal
考题
By radar alone, you detect a vessel ahead on a collision course, about 3 miles distant. Your radar plot shows this to be a meeting situation. You should ______.A.turn to portB.turn to starboardC.maintain course and speed and sound the danger signalD.maintain course and speed and sound no signal
考题
In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should ______.A.stop your enginesB.sound the danger signal at two-minute intervalsC.hold course and speed until the other vessel is sightedD.take avoiding action as soon as possible
考题
In order to insure that a RACON signal is displayed on the radar, you should ______.A.increase the brilliance of the PPI scopeB.turn off the interference controls on the radarC.use the maximum available range settingD.increase the radar signal output
考题
单选题The common way to obtain your ship’s position is（）.A
keeping a close watch and lookoutB
taking a radar range and bearingC
observing a radar target and listening to signalsD
keeping a well clear caution
考题
单选题You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.A
stop your enginesB
sound two prolonged blasts of the whistleC
sound the danger signalD
slow to bare steerageway
考题
单选题You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.A
Reduce speed to bare steeragewayB
Stop your enginesC
Begin a radar plotD
All of the above
考题
单选题The 10-cm radar as compared to a 3-cm radar of similar specifications will（）.A
be more suitable for river and harbor navigationB
provide better range performance on low lying targets during good weather and calm seasC
have a wider horizontal beam widthD
have more sea return during rough sea conditions
考题
单选题You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.A
stop your enginesB
sound two prolonged blasts of the whistleC
sound the danger signalD
slow to bare steerageway
考题
单选题（）is the most visible signal of distress from a lifeboat at sea in the daytime.A
Smoke signalB
Flash signalC
Fire signalD
Radio emergency transmission
考题
单选题What would most likely prevent a SART’s signal from being detected?（）A
Signal absorption by the ionosphereB
Heavy sea swellsC
The rescue personnel were monitoring the 10-cm radarD
The rescue personnel were monitoring the 3-cm radar
考题
单选题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 whistleB
Alter course to starboardC
Construct a radar plotD
Sound the danger signal
考题
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
send the code signal S followed by L
考题
单选题The 3-cm radar as compared to a 10-cm radar with similar specifications will（）.A
give better range performance in rain，hail，etcB
display small targets in a mass of dense sea clutter at a greater rangeC
have less sea return in choppy rough seasD
display a more map like presentation for inshore navigation
考题
单选题（）sends a radio signal from the bottom of the ship to the sea-bed,from which it is reflected.A
The marine sextantB
The chronometerC
The echo sounderD
The radar
考题
单选题In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should（）.A
stop your enginesB
sound the danger signal at two-minute intervalsC
hold course and speed until the other vessel is sightedD
take avoiding action as soon as possible
考题
单选题In order to ensure that a RACON signal is displayed on the radar，you should（）.A
increase the brilliance of the PPI scopeB
turn off the interference controls on the radarC
use the maximum available range settingD
increase the radar signal output
考题
单选题If there is any doubt as to the proper operation of a radar，which statement is TRUE?（）.A
Only a radar expert can determine if the radar is operatingB
All radars have indicator lights and alarms to signal improper operationC
A radar range compared to the actual range of a known object can be used to check the operation of the radarD
The radar resolution detector must be energized to check the radar
考题
单选题When the power of SART is on, it will（）.A
transmit distress signalB
send response signalC
transmit the signal of ship‟s positionD
be start by X-band radar
考题
单选题You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）A
Starting with a dash and extending radially outward from the targetB
As a broken line from center of PPI to the targetC
Starting with a dot and extending radially inward from the targetD
Starting with a dash and extending to the right of the target
考题
单选题A radar contact will remain stationary on a relative motion radar display only when it is（）.A
on the same course as your vesselB
at the same speed as your vesselC
on the same course and speed as your vesselD
on a reciprocal course at the same speed as your vessel
考题
单选题The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.A
transmitterB
antenna systemC
indicatorD
modulator
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