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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 flashing
B
the lighthouse has lost power and has switched to emergency lighting
C
it is the identifying light characteristic of the lighthouse
D
you have entered an area of shoal water or other hazard
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更多 “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” 相关考题
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If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work.
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
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If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work.
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
Which of the following is true?A.How the light shines on our work is of much importance.
B.The way the light shines on your work makes no difference.
C.We needn't care about where the light comes from.
D.People can write or study under a light that comes from any direction.
考题
If you are writing or studying,it makes very much difference where the light comes from.People who use books and pens every day have to be especially careful about the way the light shines on their work.
Every house gets its light either from daylight through the windows--which is the best to use--or from lamps or electricity;but whichever kind of light it is,the way it shines toward our book or work is a matter of great importance to the eyes.
Take a book,sit with your back toward the window,and try to read.Your shadow（影子）falls all over the page and makes it almost as bad for your eyes as if you were in a dark room.
Now turnaround and face the window.The page is in the shadow again,while the bright light is in your eyes.
Try sitting with your right side toward the window.This is very well for reading,but if you were writing,the shadow of your hand would fall across the page and bother（打搅）you a little.
There is just one other way:sit with your left side to the window.Now everything is perfect for reading and for writing,too.
Whatever kind of light is in the room,the rule about the right to sit is always the same.
The best way both for reading and for writing is to__________.A.sit facing the light
B.let the light shine from your back
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D.have the light come from your left
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单选题A light that has a light period shorter than its dark period is described as（）.A
flashingB
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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
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单选题After you enter the Ohio River at Cairo，which span of the Illinois Central RR Bridge would you select to pass under? （）A
Any span is navigableB
Northbank or SouthbankC
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单选题While underway in thick fog you are on watch and hear the cry“man overboard”.Which type of maneuver should you make（）.A
Figure eight turnB
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单选题You are underway in reduced visibility.You hear the fog signal of another vessel about 20° on your starboard bow.Risk of collision may exist.You should（）.A
alter course to starboard to pass around the other vesselB
reduce your speed to bare steeragewayC
slow your engines and let the other vessel pass ahead of youD
alter course to port to pass the other vessel on its portside
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多选题You are configuring a Windows Server 2008 R2 server to support a virtual machine （VM） that uses a passthrough disk. You need to install the operating system on the VM. Which two actions should you perform？（）A.Attach the pass-through disk to an IDE controller.BAttach the pass-through disk to a SCSI controller.CPlace the VM configuration file on the host server.DPlace the VM configuration file on the pass-through disk.
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one sidelight of a vessel ahead of youB
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单选题When underway in a channel，you should if safe and practicable（）.A
stay near the middle of the channelB
keep to the starboard side of any vessels you meetC
exchange whistle signals with any other vessels in the channelD
keep to the side of the channel which lies to your starboard
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单选题You are steaming in a westerly direction along the Gulf Coast.You see ahead of you a lighted buoy showing a red isophase light.Which action should you take（）.A
Alter course to port and leave the buoy to starboardB
Alter course to starboard and leave the buoy to portC
Alter course and leave the buoy near by on either sideD
Alter course and pass the buoy well-off on either side
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
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