单项选择题

以下选项中,哪一项不是报文摘要算法的应用?
A、消息鉴别
B、数据加密
C、数字签名
D、口令保护

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单项选择题

某妇女,流产后出现月经不调,表现为月经周期正常,经期延长,伴下腹坠胀、乏力、腰骶部酸痛,拟诊子宮内膜不规则脱落。支持该诊断的是()
A、经期伴下腹坠胀
B、周期正常,经期延长
C、育龄妇女
D、经期腰骶部酸痛
E、月经不规则

单项选择题

Joe Dudley is one of the world’s most successful black business owners who is also a winner of the Horatio Alger Award—an award given to outstanding individuals who have succeeded in the face of adversity. ( )

A．对
B．错