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What is the phenomenon called where different wavelengths of light travel at different speeds?()
A.OSNR
B.dispersion
C.light skew
D.attenuation
参考答案
更多 “ What is the phenomenon called where different wavelengths of light travel at different speeds?() A.OSNRB.dispersionC.light skewD.attenuation ” 相关考题
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Which of the following is not among the basic features of a relational database?A．It does not matter what order the rows are in.B．It does not matter what order the columns are in.C．Different columns should have different column names.D．Different columns should have different data types.
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What term is used to describe the process where one frame is placed into a different type of frame?()
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When operating in an area where sea ice and icebergs are present，which statement is TRUE ________．A.Icebergs may travel in a direction many degrees different from the sea iceB.Both icebergs and sea ice will move in approximately the same direction and at the same speedC.Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the bergD.Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk
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The phenomenon that words having different meanings have the same form is called____.A.hyponymy
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共用题干
第三篇Ways to Create Colors in a PhotographThere are two ways to create colors in a photograph.One method called additive,starts with three basic colors and adds them together to produce some other color. The second method,called subtractive,starts with white light(a mixture of all colors in the spectrum)and,by taking away some or all other colors,leaves the one desired.In the additive method,separate colored lights combine to produce various other colors.The three additive primary colors are green,red and blue(each providing about one-third of the wavelengths in the total spectrum).Mixed in varying proportions,they can produce all colors.Green and red light mix to produce yellow,red and blue light mix to produce magenta(a purplish pink);green and blue mix to produce cyan(a bluish green).When equal parts of all three of these primary-colored beams of light overlap（重叠）,the mixture appears white to the eye.In the subtractive process colors are produced when dye（染料）absorbs some wavelengths and so passes on only part of the spectrum.The subtractive primaries are cyan,magenta and yellow; these primaries or dyes absorb red,green and blue wavelengths respectively,thus subtracting them from white light. These dye colors are the complementary colors to the three additive primaries of red,green and blue.Properly combined,the subtractive primaries can absorb all colors of light, producing black.But,mixed in varying proportions,they too can produce any color in the spectrum.Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum,the result looks the same to the eye.The additive process was employed for early color photography. But the subtractive method,while requiring complex chemical techniques,has turned out to be more practical and is the basis of all modern color films.It can be inferred from the passage that white can be produced by______.A:mixing different proportions of magenta,green and redB:mixing equal proportions of green,red and blueC:mixing different proportions of cyan, yellow and blueD:mixing equal proportions of black,red and green
考题
What is the phenomenon called where different wavelengths of light travel at different speeds？（）A、 OSNRB、 dispersionC、 light skewD、 attenuation
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What term is used to describe the process where one frame is placed into a different type of frame?（）A、FramingB、De-encapsulationC、EncapsulationD、De-framingE、None of the above
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What is the same meaning of location value? （）A、Different valueB、Different value of same goods at the different placeC、Different goodsD、Different value of different goods at the same place
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Which scenario describes an appropriate use for opening a form in a new session?（）A、The data entered into the called form is logically independent of the data entered in the calling form. B、The called form requires different privileges than the calling form. C、The called form must execute as a different user than the calling form. D、The calling form must be able to query data in the called form before it is saved.
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单选题When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）A
Icebergs may travel in a direction many degrees different from the sea iceB
Both icebergs and sea ice will move in approximately the same direction and at the same speedC
Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the bergD
Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk
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单选题Same goods can be valued different at different times. Goods often stop during the transfer process, which is professionally called the （）.A
InventoryB
StoreC
StockD
Storage of logistics
考题
单选题What is the phenomenon called where different wavelengths of light travel at different speeds？（）A
OSNRB
dispersionC
light skewD
attenuation
考题
单选题What is the phenomenon called where different wavelengths of light travel at different speeds?（）A
OSNRB
dispersionC
light skewD
attenuation
考题
单选题Which scenario describes an appropriate use for opening a form in a new session?（）A
The data entered into the called form is logically independent of the data entered in the calling form. B
The called form requires different privileges than the calling form. C
The called form must execute as a different user than the calling form. D
The calling form must be able to query data in the called form before it is saved.
考题
单选题What term is used to describe the process where one frame is placed into a different type of frame?（）A
FramingB
De-encapsulationC
EncapsulationD
De-framingE
None of the above
考题
单选题The phenomenon that words having different meanings have the same form is called _____.A
hyponymyB
synonymyC
polysemyD
homonymy
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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
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单选题What is the same meaning of location value? （）A
Different valueB
Different value of same goods at the different placeC
Different goodsD
Different value of different goods at the same place
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单选题When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）A
the amount of lube oil additives increaseB
piston speeds increaseC
injection pressure decreaseD
engine speeds decrease
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单选题Which of the following is a TRUE statement?A
Sound travels fastest through the hardest thing.B
Sound travels at different speeds in different temperatures and in different media.C
Sound travels fastest in hottest temperature.D
Sound travels fastest in coldest temperature.
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