患者男性，15岁，因“少尿、水肿5日，咳嗽、气促，不能平卧1日”来诊。患者于起病前2周曾喉痛3日。查体：血压170/110mmHg（1mmHg=0.133kPa），端坐呼吸，两肺底闻及散在湿啰音。实验室检查：尿比重1.022，尿蛋白（＋＋＋），尿红细胞30～90个/HP。

不合适的治疗措施是（）

A.休息和对症抗感染

B.给予激素和免疫抑制剂

C.限制钠盐和水摄入

D.必要时透析治疗

E.给予利尿剂

The usual way to ensure reliable delivery is to provide the (16) 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 (17) frame bearing positive or negative (18) 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 frame to (19) 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, (20) hardware.

（20）是（）

A.acting

B.working

C.malfunctioning

D.functioning