计算机信息的实体安全包括环境安全、设备安全、()三个方面。A、运行安全 B、媒体安全 发布时间:2020-01-15 18:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 计算机信息的实体安全包括环境安全、设备安全、()三个方面。A、运行安全B、媒体安全C、信息安全D、人事安全
题型:单项选择题 ----What ________ the number of the students in your school? ----About two thousand. A number of them ________ from England.A.is; areB.is; isC.are; isD.are; are 查看答案
题型:单项选择题 The trouble is that not many students really know how to make use of their ______ time to its bestA.benefitB.advantageC.valueD.profit 查看答案