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【单选题】
数字证书就是网络通讯中标志通讯各方身份信息的一串数字,提供了一种在网络中验证通信实体身份的方式。公安网络中大量的信息系统都需要使用公安网络数据证书验证才能使用,下列关于公安网数字身份证书管理说法正确的是:A.
数字证书可以借给领导使用
B.
数字证书使用人退休后应立即上交自己的证书
C.
工作过程中可以向别人借用数字证书
D.
数字证书使用插在电脑上
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】企业 20 1 8 年 3 月 10 日签发一张期限为 3 个月的商业承兑汇票,其到期日为( )。
A.
6 月 8 日
B.
6 月 9 日
C.
6 月 10 日
D.
6 月 11 日
【单选题】what day is January the 4th
A.
January the 4th is honored for the blind's day.
B.
January the 4th is noting special.
C.
January the 4th is honorned as Louis Braille Day,for the blind'sfor the blinds.
D.
January the 4th is set up for taking care of the eyes.
【单选题】What is the role of the 4th and 5th paragraphs in the development of the topic?
A.
To show how Kuwaiti women enjoy themselves.
B.
To describe how women work and study in Kuwait.
C.
To provide a contrast to the preceding paragraphs.
D.
To provide a contrast to the preceding paragraphs.
【单选题】What is the role of the 4th and 5th paragraphs in the development of the topic?
A.
To further illustrate the trend of oil production in the U. S.
B.
To provide supportive evidence for the trend of oil production.
C.
To explain how the present condition come into being.
D.
To give professional viewpoint on the present condition.
相关题目：
【单选题】企业 20 1 8 年 3 月 10 日签发一张期限为 3 个月的商业承兑汇票,其到期日为( )。
A.
6 月 8 日
B.
6 月 9 日
C.
6 月 10 日
D.
6 月 11 日