使用常用文字编辑工具编辑正文时,为改变该文档的文件名,常选用()命令;在"打印预览"方式下,单击"(2)"按钮可返回编辑文件;将正文中所有"Computer"改写为"计算机",常选用 ()命令。
A."文件" → "别存为" B."文件" → "保存" C."插入" → "对象" D."工具" → "选项"
单项选择题In ()programming, the user determines the sequence of instructions to be executed, not programmer.
A.top-down B.structure C.data-driven D.event-driven
单项选择题Files can be lost or destroyed accidentally. Keep()copies of all data on removable storage media.
A.backup B.back C.black D.backdown