【多选题】根据《旅行社责任保险管理办法》的规定,责任限颖可以根据旅行社( ),由旅行社与保险公同协商确定。
【单选题】为了让RDT协议能处理重复的数据,发送方需要在每个数据包上加上:
【单选题】SpeakerA: Which instrument(乐器)is he playing? SpeakerB: _______________
B.
He is playing the guitar.
【简答题】常见的五种致病性大肠杆菌: 、 、 、 、
【单选题】Television is another major instrument of communication, ______ us to see as well as to hear the performer.
【简答题】He invented the 3. _______________ (music) instrument, Se, a plucked instrument with 50 strings,