【判断题】3DES基于DES,对1块数据用3个不同密钥加密3次。
【单选题】Unfortunately, when I dropped in, Doctor Wang_____for Chengdu to join in the fight again bird flu, so we only had time for a few words.
【单选题】—What about the student in your class, Mr. Wang? —The doctor said that ________ sleep caused him poor memory and poor concentration.
【简答题】试举例说明什么是总体、总体单位、变量、变量值、指标与标志。
【单选题】Ms Wang is _____ nice doctor. [ ]
【简答题】____________(夫人)Wang is a doctor.
【单选题】. Doctor Wang _____ at seven o’clock for the conference, but she didn’t turn up.