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Uncharted lights and radar beacon transmissions may be ________ near the station．
A.encountered
B.met
C.contacted
D.seen
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更多 “ Uncharted lights and radar beacon transmissions may be ________ near the station．A.encounteredB.metC.contactedD.seen ” 相关考题
考题
The closest point of approach ( CPA ) of a contact on a relative motion radar may be determined ______.A.immediately when the contact is noted on radarB.only if the radar scope is watched constantlyC.after the contact has been marked at least twiceD.by an occasional glance at the radar
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
The issue of Notices to Mariners of charts and these aids(Radar beacons)may be delayed until such time as they are assessed to be ______.A.temporaryB.permanentC.occasionalD.steady
考题
It may be found that，in certain circumstances，Radar Beacon can cause unwanted interference particularly ______．A.At close rangeB.At end on situationC.At head on situationD.At crossing situation
考题
In determining a safe speed, the Rules list all of the following as factors which must be taken into account EXPECT the ______.A.limitations of radar equipmentB.presence of background lights at nightC.maximum horsepower of your vesselD.maneuverability of your vessel
考题
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
考题
It may be found that, in certain circumstances, Rader Beacon can cause unwanted interference particularly ______.A.at close rangeB.at head on situationC.at crossing situationD.at end on situation
考题
It may be found that, in certain circumstances, Rader Beacon emissions can cause ____ with the normal radar display, particularly at close range.A.unwanted interferenceB.unexpected figuresC.abnormal dataD.unwanted information
考题
单选题If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.A
be damagedB
work normally regardless of harmful conditionsC
not wok though it is not in a bad condition
考题
单选题In regions where ice conditions prevail in the winter，（）.A
the lantern panes of unattended lights may not become covered with ice or snowB
the lantern panes of unattended lights may become covered with ice or snowC
ice or snow is likely caused coloredD
the white lights are likely caused to appear colored
考题
单选题The prohibition against displaying lights which may be confused with required navigation lights applies（）.A
from sunset to sunrise and during restricted visibilityB
only when other vessels are in the areaC
only when operating in a traffic separation schemeD
only when under tow
考题
单选题A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.A
are not the same color as either side lightB
have a lesser range of visibility than the prescribed lightsC
do not impair the visibility or distinctive character of the prescribed lightsD
All of the above
考题
单选题The steering and sailing rules for vessels in restricted visibility apply to vessels（）.A
in sight of one another in fogB
navigating in or near an area of restricted visibilityC
only if they are showing special purpose lightsD
only if they have operational radar
考题
单选题It may be found that，in certain circumstances，radar beacon emissions can cause（）with the normal radar display，particularly at close range.A
unwanted interferenceB
unexpected figuresC
abnormal dataD
unwanted information
考题
单选题A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.A
do not interfere with the keeping of a proper look-outB
are not the color of either sidelightC
have a lesser range than the prescribed lightsD
All of the above
考题
单选题The issue of Notices to Mariners of charts and these aids(Radar beacons)may be delayed until such time as they are assessed to be（）.A
temporaryB
permanentC
occasionalD
steady
考题
单选题When will the float-free emergency position indicating radio beacon be activated after abandoning ship?（）A
Immediately after floating freeB
After about one hour when the salt water activates the batteryC
Only when keyed by the radar of another vesselD
Only when daylight activates the photovoltaic cell
考题
单选题In determining safe speed，the Rules list all of the following as factors which must be taken into account EXCEPT the（）.A
limitations of radar equipmentB
presence of background lights at nightC
maximum horsepower of your vesselD
maneuverability of your vessel
考题
单选题Safe water buoys may show ONLY（）.A
flashing red lightsB
flashing green lightsC
white lightsD
yellow lights
考题
单选题Which statement concerning the operation of radar in fog is TRUE?（）A
Radar ranges are less accurate in fogB
Navigation buoys will always show up on radarC
A sandy beach will show up clearer on radar than a rocky cliffD
Small wooden boats may not show up on radar
考题
单选题A vessel constrained by her draft may display（）.A
three all-round red lights instead of the lights required for a power-driven vessel of her classB
the same lights as a vessel restricted in her ability to maneuverC
three all-round red lights in addition to the lights required for a power-driven vessel of her classD
the lights for a power-driven vessel which is not under command
考题
单选题Green lights may appear on（）.A
horizontally banded buoysB
vertically striped buoysC
yellow buoysD
spherical buoys
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The closest point of approach (CPA) of a contact on a relative motion radar may be determined（）.A
immediately when the contact is noted on radarB
only if the radar scope is watched constantlyC
after the contact has been marked at least twiceD
by an occasional glance at the radar
考题
单选题A vessel constrained by her draught may，in addition to the lights prescribed for power-driven vessels in Rule 23，exhibit where they can best be seen（）or a cylinder.A
two all-round red lights in a vertical lineB
three all-round red lights in a vertical lineC
two all-round yellow lights in a vertical lineD
three all-round green lights in a vertical line
考题
单选题If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.A
pushed aheadB
towed alongsideC
towed asternD
Any of the above
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