以下不属于个人教育贷款支付管理中的风险的是（）。

A.未详细记录资金流向和归集保存相关凭证，造成凭证遗失

B.未通过账户分析、凭证查验或现场调查等方式，核查贷款支付是否符合约定用途

C.将学费和住宿费的贷款资金全额发放至借款人账户

D.未按规定的贷款额度、期限、担保方式、结息方式、计息方式、还款方式、利率调整方式和发放方式等发放贷款

A transport layer protocol usually has several responsibilties. One is to create a process-to-process communication UDP uses （1）numbers to accomplish this. Another responsibility is to provide control mechanisms at the transport level UDP does this task at a very minimal level. There is no flow control mechanism and there is no （2）for received packet. UDP, however, does provide error control to some extent. If UDP detects an error in the received packet, it will silently drop it.

The transport layer also provides a connection mechanism for the processes. The （3）must be able to send streams of data to the transport layer. It is the responsibility of the transport layer at（4）station to make the connection with the receiver chop the stream into transportable units, number them, and send them one by one. it is the responsibility of the transport layer at the receiving end to wait until all the different units belonging to the same process have arrived, check and pass those that are （5） free, and deliver them to the receiving process as a stream.

（5）是（）

A.call

B.state

C.cost

D.error