以下程序的输出结果是（）。enumColor{Red，Green=2，Blue}staticvoidMain（string[]args）{Colorc=0；Colorc1=（Color）2；Console.WriteLine（"{0}，{1}"，c，c1）；Console.Read（）；}

A:Green，Red B:Red，Green C:Red，Blue D:Green，Blue

当语句w=IIf（4>10，”Red”，“Green”）执行后，变量w中的值是（）。

A:Null B:“Red” C:“Green” D:-1

Red Hat Enterprise Linux版本分为（）。

A:Red Hat Enterprise LinuxAS B:Red Hat Enterprise LinuxES C:Red Hat Enterprise LinuxBS D:Red Hat Enterprise LinuxWS

(Red and green) light, (if mixing), (in) the right proportion, (will give) us yellow.（　）

A:Red and green B:if mixing C:in D:will give

? ?There are two ways to create colors in a photograph. One method, called additive, starts with three basis colors and adds them together to produce some other colors. 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; green and blue mix to produce cyan. When equal parts of all three of these primary-colored beams of light overlap, the mixture appears white to the eye.
? ?In the subtractive process, colors are produced when dye (as in paint or color photographic materials) absorbs some wavelengths and so passes on only part of the spectrum. The subtractive primaries are cyan (a bluish green), magents (a purplish pink), and yellow; these are the pigments or dyes that absorb red, green and blue wavelengths, respectively, thus subtracting them form white light. These dye colors are the complementary colors to the three additive primaries of red, green and blue. Properly combined the subtractive primaries and 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.

What color filter would absorb red wavelengths?

A:Red. B:Cyan. C:Magenta. D:Yellow

以下代码完成画线功能，所画线的颜色是( )。
(1)g．setColor(Color．red．green．cyan．yellow)；
(2)g．drawLine(0，0，100，100)：

A:red B:green C:yellow D:cyan

关于Red Hat Linux Enterprise，以下说法错误的是( )。

A:具有广泛的开源生态系统 B:Red Hat Linux Enterprise是红帽企业版，最新版本是Red Hat Linux Enterprise Linux5 C:适应来自世界领先硬件厂商的多种硬件平台 D:不能与现有的UNIX和Windows犟础架构实现协同工作

以下代码完成画线功能，所画线的颜色是( )。 (1)g．setColor(Color．red．green．cyan．yellow)； (2)g．drawLine(0，0，100，100)：

A:red B:green C:yellow D:cyan