Method: Describe disadvantages of current payment system in medical market, compare advantages and disadvantages between a few kinds of payment systems of "single-diagnosed disease".

方法：采用比较的方法，先对现行医疗收费方式的弊端进行阐述，再对目前可行的几种单病种收费方式优点与不足进行比较。

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Compare advantages and disadvantages between manual network topologies and auto network topologies, and point to that manual network topologies is indispensable for network management.

比较了手动网络拓扑和自动网络拓扑的优缺点，指出手动网络拓扑仍是不可缺少的管理方式。

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Let's take a look at two simple protocols in the stack used to send data, RFCOMM and OBEX, and compare the advantages and disadvantages of using them when transferring files.

我们先来看看栈中用来发送数据的两个简单协议RFCOMM和OBEX，并比较使用它们传送文件的优势和不足。

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