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【多选题】
利用密码技术,可以实现网络安全所要求的A.
数据保密性
B.
数据完整性
C.
数据可用性
D.
身份认证技术
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】下列关于硬盘的说法中,正确的是___。
A.
硬盘通常安装在主机箱内，所以硬盘属于内存
B.
突然断电后，保存在硬盘中的数据将全部丢失
C.
硬盘必须通过相应的接口电路才能跟主机相连
D.
硬盘中保存的数据可以直接被调入CPU中进行处理
【简答题】根据你听到的一篇长对话，回答1-2小题。 1. What is Peter doing? A. Writing book B. Writing a composition in English C. Having an English class 2. What time does class begin? A. At 13: 15 B. At 13: 25 C. At 13: 10
【单选题】—What is Peter doing at 7:30 in the morning? —He __________ breakfast with his family.
A.
is having
B.
are having
C.
is have
D.
has
【单选题】—What is Peter doing at 7:30 in the morning?
A.
e __________ breakfast with his family。
B.
is have
C.
is having
D.
has
E.
are having
【简答题】听下面一段对话，回答第1-2小题。 1. What is Peter doing now? A. He is doing his homework. B. He is going to the library. C. He is reading a book. 2. Where did Peter go last Monday? A. He stayed at home. B. He went t...
【单选题】— What is Peter doing at 7:30 in the morning? — He __________ breakfast with his family.
A.
is have
B.
is having
C.
has
D.
are having
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