A按字引入文本, 对西文是逐个单词出现, 对中文是逐字出现
B 整批发送即幻灯片内的文字内容一起出现
C 按字母引入文本, 对汉字而言是逐字出现
D 按照第一层段落分组, 表示以最低层段落为动画单位
A.为坛而盟,祭以尉首。(史记.陈涉世家)
B.冰,水为之,而寒于水。(荀子.劝学)
C.是他春带愁来。(辛弃疾:祝英台近)
D.“子为谁?”曰:“为仲由。”(论语.微子)
E.中峨冠而多髯者为东坡。(魏学洢:核舟记)
设以串行方式1进行数据传送,fosc=6MHz,波特率为2400bit/s(SMOD=1)。发送的8个数据依次存在外RAM首址4000H单元中,先发送数据长度,后发送8个数据,试编写发送子程序。
A.可视的占位符对象和非占位符对象都可以设置动画效果
B.对象显示动画效果时,可以同时配以声音
C.定义对象动画后,可单击鼠标令其出现,也可令其在前一事件后自动出现
D.一个幻灯片中各个对象产生动画的先后顺序是不能调整的
选出应填入下面一段英语中______内的正确答案。
VRML is a(1)for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra(2)(z and time) to the presentation of documents. The applications of VRML are(3), ranging from simple business graphics to entertaining WWW page graphics, manufacturing, scientific, entertainment, and educational applications, and 3D shared virtual worlds and communities.
X3D is the name under which the development of VRML is continued. X3D is based on XML and is backwards(4)with VRML. Furthermore, it is componentized, profiled, and extensible, which makes it possible to use X3D in very different(5), from high-end visualizations to lightweight applications.
A.多系品种
B.开放授粉品种
C.综合品种
D.复合品种