【单选题】轴的结构工艺性中轴的直径变化应尽可能( )
【多选题】以下属于网络协议的缺陷的是
A.
黑客冒充合法用户的IP地址访问服务器,窃取信息
C.
通常,互联网上的信息都是以原文的形式进行传输的
【判断题】化学危险物品,是指中华人民共和国国家标准GB、-86《危险货物分类与品名编号》规定的分类标准中的爆炸品、压缩气体和液化气体、易燃液体、易燃固体、自燃物品和遇湿易燃物品、氧化剂和有机过氧化物、毒害品和感染性物品、放射性物品和腐蚀品八大类。
【单选题】_________ in dealing with such a film, you will be sorry.
【简答题】Jim is sorry ________ so impolite to your guest last Saturday. A) to be B) having been C) being D) to have been
【单选题】I'm sorry ______ answered your letter earlier.
【单选题】I’m terribly sorry for _____ you waiting for such a long time.
【单选题】Any student______ in swimming can apply for membership.
A.
having a keen interest
B.
with a keen interesting
C.
who is keenly interesting