成年男尸,膀胱黏膜充血,潮红,可见黏膜溃疡,如图所示,最有可能的诊断是()
A.急性膀胱炎
B.膀胱结核
C.膀胱癌
D.膀胱息肉
E.以上都不正确
参考答案:A
The usual way to ensure reliable delivery is to provide the (71) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (72) flame bearing positive or negative (73) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame has arrived safely. On the other hand, a negative acknowledgement means that’ something has gone wrong, and the frame must be transmitted again.
An additional complication comes from the possibility that hardware troubles may cause a flame to (74) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (75) hardware.
(71)处应填()。
A.receiver
B.controller
C.sender
D.customer
航海日志用完后,由()负责留船保管()年,然后送公司保留。
A.大副/2
B.船长/1
C.二副/2
D.二副/1