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问题 单项选择题

Which of the following nursing measures would the nurse institute to help reduce eyelid edema in a child with nephrotic syndrome

A．Instill eye drops every 8 hours.

B．Limit the child's television watching.

C．Apply cool compresses to the child's eyes.

D．Elevate the head of the child's bed.

答案

参考答案：D

解析：Elevating the head of the bed allows gravity to increase the downward flow of fluids in the body and away from the face.

填空题

对我国植被资源破坏最大的是人为的______、______、______等．
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单项选择题

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (11) 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 (12) ,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 (13) network layer, the router may be able to translate between the packer 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 (14) . As an example, gateways between Internet e-mail and X.400 e-mail must (15) the e-mail message and change various header fields.

14（）

A.syntax

B.semantics

C.language

D.format
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