对常见的药品误用与严重的药物滥用信息的收集属于
A.上市后药品的再审查B.上市后药品的再评价C.非预期药物作用D.药物警戒E.药物临床评价
参考答案:D
Which book is much better quality? [ ]
A. in need of
B. in case of
C. in terms of
D. in favor of
A transport layer protocol usually has several responsibilities. One is to create a process-to-processcommunication UDP uses ______ numbers to accomplish this. Another responsibility is to provide controlmechanisms at the transport level, UDP does this task at a very minimal level. There is no flow control mechanismand there is no ______ for received packet. UDP, however, does provide error control to some extent. If UDPdetects an error in the received packet, it will silently drop it. The transport layer also provides a connection mechanism for the processes. The ______ must be able to sendstreams of data to the transport layer. It is the responsibility of the transport layer at ______ station to make theconnection with the receiver chop the stream into transportable units, number them, and send them one by one. Itis the responsibility of the transport layer at the receiving end to wait until all the different units belonging to thesame process have arrived, check and pass those that are ______ free, and deliver them to the receiving process asa stream.
A.sending
B.routing
C.switching
D.receiving