搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1/A2型题

早期治疗化脓性髋关节化脓性炎最好的方法是（）。

A.合理有效抗生素加石膏固定

B.足量有效抗生素加支持治疗

C.足量有效抗生素加功能锻炼及理疗

D.足量有效抗生素加关节穿刺抽液并注入抗生素

E.切开引流，使用定量抗生素

答案

参考答案：E

解析：髋关节由于位置较深，穿刺插管难以成功，应做及时切开引流。

选择题

下列文化现象与城市经济和工商业发展无关的是

A．古代散文的发展

B．宋代话本和词的出现

C．世俗画的出现

D．明清小说的出现
查看答案
单项选择题

Networks can be interconnected by different devices. In the physical layer, networks can be connected by （66） or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data link layer. They can accept （67） , examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have （68） network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message （69） . As an example, gateways between Internet e-mail and X.400 e-mail must （70） the e-mail message and change various header fields.

A．frames

B．packets

C．packages

D．cells
查看答案