网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
A
Indicates the limits of the navigable channel
B
Indicates a danger area
C
Is used to identify the characteristics of the light
D
Serves no significant purpose
参考答案
参考解析
解析：
暂无解析
更多 “单选题On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.A Indicates the limits of the navigable channelB Indicates a danger areaC Is used to identify the characteristics of the lightD Serves no significant purpose” 相关考题
考题
You have left the light on Oh. soihave__and tum it offA.I'll goB. I have goneC.i'm going toD.I go
考题
On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. The red sector ______.A.indicates the limits of the navigable channelB.indicates a danger areaC.is used to identify the characteristics of the lightD.serves no significant purpose
考题
It was () of you to turn off the light while I was sleeping.
A、considerableB、considerateC、concernedD、careful
考题
Which publication should you check for complete information on Puget Sound weather conditions?A.Sailing DirectionsB.Light ListC.Coast PilotD.Chart of the area
考题
The symbol which appears beside a light on a chart reads Gp Fl R (2) 10 sec 160 ft 19M. Which characteristic describes the light?A.It is visible 10 milesB.Its distinguishing number is 19MC.It has a radar reflectorD.None of the above
考题
In which source could you find the number of a chart for a certain geographic area? ______.A.Chart No. 1B.Catalog of ChartsC.IMO Practical NavigatorD.IMO Light List
考题
When making landfall at night，the light from a powerful lighthouse may sometimes be seen before the lantern breaks the horizon．This light is called the ______．A.diffusionB.backscatterC.loomD.elevation
考题
______ is not an alarm required by IMO standards to be available on the ECDIS．A.Deviating from a planned routeB.Approach to waypoints and other critical pointsC.Light house detectingD.Larger scale chart available
考题
A buoy having red and green horizontal bands would have a light characteristic of ______.A.group occultingB.composite group flashingC.Morse letter AD.quick flashing
考题
共用题干
The first navigational lights in the New World were probably lanterns hung at harbor entrances.The first lighthouse was put up by the Massachusetts Bay Colony in 1716 on Little Brewster Island at the entrance to Boston Harbor, Paid for and maintained by“light dues”levied（征 收）on ships,the original beacon was blown up in 1776.Until then there were only a dozen or so true lighthouses in the colonies.Little over a century later,there were 700 lighthouses.The first eight lighthouses erected on the West Coast in the 1850s featured the same basic New England design:a Cape Cod dwelling with the tower rising from the center or standing close by .In New England and elsewhere,though,lighthouses reflected a variety of architectural styles.Since most stations in the Northeast were set up on rocky eminences（高处）,enormous towers were not the rule .Some were made of stone and brick,others of wood or metal.Some stood on pilings or stilts;some were fastened to rock with iron rods.Farther south,from Maryland through the Florida Keys,the coast was low and sandy.It was often necessary to build tall towers theremassive structures like the majestic lighthouse in Cape Hatteras,North Carolina,which was lit in 1870.190 feet high,it is the tallest brick lighthouse in the country.Not withstanding differences in construction appearance,most lighthouses in America shared several features:a light,living quarters,and sometimes a bell(or,later,a foghorn).They also had something else in common:a keeper and usually the keeper's family.The keeper's essential task was trimming the lantern wick（灯芯）in order to maintain a steady,bright flame. The earliest keepers came from every walk of life, they were seamen,farmers,mechanics,rough mill hands and appointments were often handed out by local customs commissioners as political plums.After the administration of lighthouse was taken over in 1852 by the United States Lighthouse Board,and agency of the Treasury Department,the keeper corps gradually became highly professional. Which is the best title for the passage?A: The Lighthouse on Little Brewster Island.B: The Life of a Lighthouse Keeper.C: Early Lighthouses in the United States.D: The Modern Profession of Lighthouse-keeping.
考题
共用题干
The first navigational lights in the New World were probably lanterns hung at harbor en-trances .The first lighthouse was put up by the Massachusetts Bay Colony in 1716 on Little Brewster Island at the entrance to Boston Harbor. Paid for and maintained by“light dues”levied（征收）on ships,the original beacon was blown up in 1776.Until then there were only a dozen or so true lighthouses in the colonies .Little over a century later,there were 700 lighthouses.The first eight lighthouses erected on the West Coast in the l850s featured the same basic New England design:a Cape Cod dwelling with the tower rising from the center or standing close by .In New England and elsewhere,though,lighthouses reflected a variety of architectural styles.Since most stations in the Northeast were set up on rocky eminences（高处）,enormous towers were not the rule .Some were made of stone and brick,others of wood or metal. Some stood onpilings or stilts;some were fastened to rock with iron rods.Farther south,from Maryland through the Florida Keys,the coast was low and sandy.It was often necessary to build tall towers there—massive structures like the majestic lighthouse in Cape Hatteras,North Carolina,which was lit in 1870.190 feet high,it is the tallest brick lighthouse in the country.Not withstanding differences in construction appearance,most lighthouses in America shared several features:a light,living quarters,and sometimes a bell(or,later,a foghorn).They also had something else in common:a keeper and usually the keeper's family.The keeper's essential task was trimming the lantern wick（灯芯）in order to maintain a steady,bright flame. The earli-est keepers came from every walk of life,they were seamen,farmers,mechanics,rough mill hands and appointments were often handed out by local customs commissioners as political plums. After the administration of lighthouse was taken over in 1852 by the United States Lighthouse Board,and agency of the Treasury Department,the keeper corps gradually became highly profes- sional. Which is the best title for the passage?A: The Lighthouse on Little Brewster Island.B: The Life of a Lighthouse Keeper.C:.Early Lighthouses in the United States.D: The Modern Profession of Lighthouse-keeping.
考题
What physical characteristic does a retinal scan biometric device measure?视网膜扫描设备检测哪些人体物理特性？（）A、The pattern of light receptors at the back of the eye眼底光受体组织的图案B、The pattern of blood vessels at the back of the eye眼底血管的图案C、The amount of light reaching the retina视网膜受光量
考题
单选题A preferred-channel buoy will show a（）.A
white light whose characteristic is Morse (A)B
group-occulting white lightC
composite group-flashing (2 + 1) white lightD
composite group-flashing (2 + 1) red or green light
考题
单选题Aids to navigation marking the intracoastal waterway can be identified by（）.A
the letters ICW after the aid's number or letterB
yellow stripes，squares，or triangles marked on themC
white retroreflective materialD
the light characteristic and color for lighted aids
考题
单选题What physical characteristic does a retinal scan biometric device measure?视网膜扫描设备检测哪些人体物理特性？（）A
The pattern of light receptors at the back of the eye眼底光受体组织的图案B
The pattern of blood vessels at the back of the eye眼底血管的图案C
The amount of light reaching the retina视网膜受光量
考题
单选题A buoy having red and green horizontal bands would have a light characteristic of（）.A
group occultingB
composite group flashingC
Morse letter AD
quick flashing
考题
单选题What is the light characteristic of a lighted，preferred-channel buoy? （）A
Group flashingB
Composite group flashingC
Interrupted quick flashingD
Fixed and flashing
考题
单选题When a feature remains in its existing charted position but has a change of characteristic,（）command is used on a chart.A
MOVEB
DELETEC
AMENDD
SUBSTITUTE
考题
单选题Once a lighthouse is built, no ship of any nationality can be effectively _____ from the utilization of the lighthouse for navigational purposes.A
isolatedB
dismissedC
distractedD
excluded
考题
单选题You are underway and pass by a lighthouse. Its light，which was white since you first sighted it，changes to red. This means（）.A
the light is characterized as alternately flashingB
the lighthouse has lost power and has switched to emergency lightingC
it is the identifying light characteristic of the lighthouseD
you have entered an area of shoal water or other hazard
考题
单选题On navigational aids，what does the light characteristic Fl(2+1) mean?（）A
A flashing light combined with a fixed light of greater brightnessB
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
A fixed light varied at regular intervals by groups of two or more flashes of greater brightness
考题
单选题Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）A
FlashingB
Quick flashingC
Composite group flashingD
Equal interval (isophase)
考题
单选题A light characteristic of composite group flashing indicates that there is a(n)（）.A
sharp turn in the channelB
narrowing in the channel at that pointC
junction in the channelD
obstruction that must be left to port
考题
单选题In which source could you find the number of a chart for a certain geographic area?（）A
Chart No.1B
Catalog of ChartsC
IMO Practical NavigatorD
IMO Light List
热门标签
最新试卷