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单选题
Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）
A
Geographical positions outlining the area of the sector
B
True bearings as observed from the ship toward the light
C
An outline of the area of the sector
D
True bearings as observed from the light toward the ship
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更多 “单选题Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）A Geographical positions outlining the area of the sectorB True bearings as observed from the ship toward the lightC An outline of the area of the sectorD True bearings as observed from the light toward the ship” 相关考题
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单选题By night，you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel，it will be marked by（）.A
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单选题A vessel not under command shall display（）.A
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单选题A vessel not under command making way at night would show（）.A
two all-round red lights in a vertical lineB
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单选题Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）A
Geographical positions outlining the area of the sectorB
True bearings as observed from the ship toward the lightC
An outline of the area of the sectorD
True bearings as observed from the light toward the ship
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单选题An anchored vessel on pilotage duty must show which light(s) at night? （）A
A sternlight onlyB
Anchor lights onlyC
A white light over a red light onlyD
A white light over a red light and anchor lights
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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
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单选题The four standard light colors used for lighted aids to navigation are red，green，white，and （）.A
purpleB
orangeC
blueD
yellow
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单选题（） providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.A
Except forB
BesideC
ExceptD
In addition to
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单选题Restricted areas at locks and dams are indicated by（）.A
flashing red lights upstream and fixed red lights downstreamB
yellow unlighted buoysC
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red daymarks upstream and green daymarks downstream
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单选题Is considered to be one of the detainable deficiencies under the STCW Convention（）.A
Absence, substantial deterioration or failure of proper operation of the cargo deck area fire protection on tankerB
Absence, non-compliance or serious deterioration of lights, shapes or sound signalC
Absence or failure of proper operation of the radio equipment for distress and safety communicationD
Absence in a watch of a person qualified to operate equipment essential to safe navigation, safety radio communications or the prevention of marine pollution
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单选题An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）A
Three lights in a vertical line，the highest and lowest red and the middle white，and anchor lightsB
Three lights in a vertical line，the highest and lowest red and the middle white，ONLYC
Anchor lights ONLYD
Anchor lights and sidelights ONLY
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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
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单选题A vessel，which is unable to maneuver due to some exceptional circumstance，shall exhibit （）.A
during the day，three balls in a vertical lineB
during the day，three shapes，the highest and lowest being balls and the middle being a diamondC
when making way at night，two all-round red lights，sidelights，and a sternlightD
when making way at night，masthead lights，sidelights，and a sternlight
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