【判断题】在rdt协议中,引人定时器来处理数据包的丢失。 如果在定时器的持续时间内未接收到发送的分组的ACK,则假定分组(或其ACK或NACK)已经丢失,因此会重传数据包。
【单选题】清代知县聘请的“钱粮”、“刑名”师爷,年薪一般有()白银。
【单选题】______is not mentioned in the text as having become popular with the public after the disaster.
【单选题】听力原文:W Chandler, did you speak to the people in shipping about my delivery? I need to show a client the samples tomorrow. M Yes. They said that it will arrive tomorrow afternoon. W I'm afraid that'll ...
A.
She didn't make an arrangement for delivery.
B.
She didn't receive her package.
C.
She will be late for the meeting.
D.
She can't contact the supervisor.
【简答题】After having asked somebody a question, it'll be polite of you to __________.
【简答题】A.After having the request signed by the doctor. B.After meeting Prof. Brown. C.After talking with the Dean. D.After meeting Mr. Cheng.
【简答题】船舶被强力甲板划分为()、和()两部分。