【判断题】ZigBee协议从下到上分别为物理层(PHY)、媒体访问控制层(MAC)、传输层(TL)、网络层(NWK)、应用层(APL)等。其中物理层和媒体访问控制层遵循 IEEE802.15.4标准的规定。( )
【单选题】听力原文:M: I just finished reading a book of short story by Hemlen Garlen called May Traveled Road. I really enjoy it. Have you read it? W: Yes, it was a required reading in the American literature cours...
A.
A lecture in their American literature course.
B.
A film about the American frontier.
C.
A book they both read.
D.
The woman's recent trip to the American Midwest.
【判断题】在未来战争中,新型信息化装备将使战场更透明,可实现全球感知,实时进行远程指挥控制。
【简答题】ZigBee协议从下到上分别为物理层、____、传输层、网络层、____等。
【判断题】所谓倒签提单是指承运人或其代理人应托运人的要求,在货物装船完毕后,以晚于该票货物实际装船完毕的日期作为提单签发日期的提单。
【单选题】I have finished reading a large part of the book ,______is more difficult.
【单选题】I just finished reading a great book. I thought ___ story was really exciting.
【单选题】听力原文:M: I just finished reading a book of short stories by Hemlen Garlen called May Traveled.Road. I really enjoyed it. Have you ever read it? W: Yes, it was a required reading in the American literat...
A.
The woman's recent trip to the American Midwest.
B.
A lecture in their American literature course.
C.
A film about the American frontier.
D.
A book they both read.