产后泌乳机制错误的是（）。

A.低雌激素

B.高胎盘生乳素

C.低孕激素

D.新生儿吸吮刺激

E.高催乳素

To a router, a flow is a (1) of packets that share the same characterstics, such as traveling the same (2) , using the same (3) , having the same kind of security, and so on. A router that suppors the handling of flow labels has a (4) table. The table has an entry for each active flow label; each entry defines the (5) required by the corresponding flow label.

1（）

A．sequence

B．stream

C．queues

D．flow