Files can be lost or destroyed accidentally. Keep (72) copies of all data on removable storage media。

题库:计算机网络管理员 类型:最佳选择题 时间:2017-07-03 13:35:35 免费下载:《单项选择》Word试卷

Files can be lost or destroyed accidentally. Keep (72) copies of all data on removable storage media。
A.back
B.black
C.backdown
D.backup

本题关键词:BE值,糖链抗原72-4,血清癌抗原72-4;