1991年CCITT和ISO联合制定的“多灰度静止图像的数字压缩编码”标准是( )。
A. JPEG
B. MPEG
C. VCD
DVD
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多媒体技术中能应用于教育、培训等领域,在家庭PC中没有什么用途。
A. 对
B. 错
What would Sally (the heroine of A Swimmer's Story) do? Would she quit swimming and persuade her father into accepting her choice, or would she, with firm resolutions, continue to pursue her career as a professional swimmer who might achieve top prizes,despite all the pains, solitude, and hard work?萨利(《一个游泳运动员的故事》女主人公)会怎么做?她会放弃游泳,并且说服父亲接受自己的选择,还是会忍受所有的痛苦、孤独和辛苦,坚韧不拔,继续奋斗在专业游泳运动员的职业道路上,以期摘得最高荣誉的一天?Please discuss with you team players and compose a sequal with NO LESS THAN 200 words to this story. 请与小组成员讨论,并为课文续写结局(不少于两百个单词)。
下列测温仪表属于接触式测温仪表的是 。
A. 光学高温计
B. 比色高温计
C. 辐射式高温计
D. 双金属温度计
利用电阻应变原理来测量压力的是 。
A. 应变片式压力传感器
B. 压阻式压力传感器
C. 膜式压力计
D. 波纹管压力计