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问题 单项选择题

属于和法的方剂是（）

A．保和丸

B．二陈汤

C．两者均是

D．两者均非

答案

参考答案：D

解析：

二陈汤行气和中，燥湿化痰；保和丸消食和胃。二方都属消法。和法指通过和解与调和的方法，使半表半里之邪，或脏腑、阴阳、表里失和之证得以解除的一种治法。二方都不属和法。

填空题

物体所受的重力跟它的质量成______，其比值是定值，约等于______．
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单项选择题 共用题干题

For  (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to.

空白（5）处应选择（）

A.address

B.identifier

C.interface

D.element
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