启动PowerPoint 2003后,屏幕进入()界面。
A.新建对话框
B.打开对话框
C.启动对话框
D.新幻灯片对话框
参考答案:D
The doctors suggest young kids should ______ the earphones and have a rest every 30 minutes. [ ]
A. get off
B. take off
C. turn off
D. put off
跨越架的竖立柱间距以()为宜,立柱埋深不应小于0.5m。
A、0.5~1.0m;
B、1.5~2.0m;
C、1.5~3.0m;
D、2.5~3.0m。