flex中常见的文件MIME类型包括（） A: application/x-shockwave-flash B: image/jpeg C: image/gif D: application/file

在SQL中，数据类型image只能存储gif和jpeg格式的文件

通过画布的方法toDataURL（ 'image/jpeg' ）来获取裁剪后的图像。

以下代码能正确在浏览器中显示图片的是：（ ） A: <;?php$img = imagecreatefromjpeg(“images/scce.jpg”)imagejpeg($img);imagedestroy($img);?>; B: <;?phpheader(“content-type:image/jpeg”);$img = imagecreatefromjpeg(“images/scce.jpg”)imagejpeg($img);imagedestroy($img);?>; C: <;?phpheader(“content-type:image/jpeg”);$img = imagecreatefromfile (“images/scce.jpg”)imageout($img);imagedestroy($img);?>; D: <;?phpheader(“content-type:image/jpeg”);$img = imageopen(“images/scce.jpg”)imagejpeg($img);imagedestroy($img);?>;

下面( ）是图片文件的MIME类型。 A: text/html B: image/jpeg C: audio/mpeg D: application/msword

下列图像存储格式中哪个是开放式存储格式？ A: TIFF B: ERDAS Image C: ENVI标准格式 D: JPEG

以下哪些软件是专门用于图片压缩的软件（ ）。 A: JPEG Optimizer B: 快剪辑 C: Image Optimizer D: HyperSnap-DX 6.0

某网站存在上传，提示“只允许上传JPG/PNG/GIF/JPEG格式图片”，下面不可以用哪些方法绕过 A: 在木马开头加上GIF87a B: 00截断 C: 修改content-type为image/jpeg D: 修改后缀为php5

Which of the following statements about image texture is correct: refers to which characteristics of the image? ( ) A: Image texture is the relative brightness of objects in the image B: Image texture is the apparent roughness of an image region C: Image texture is the apparent smoothness of an image region D: Image texture is the frequency of tonal change on an image

1. For an image with 100 * 100 pixels, each pixel has 8-bits to express its gray scale.If the data volume of the compressed image is 40000 bits after Huffman coding , the compression ratio of the image is ( ). A: A. 4:1 B: B. 3:1 C: C. 1:2 D: D. 2:1