（）是最基本的LSA类型，所有运行OSPF的路由器都会生成这种LSA。A.Route

补全对话。

(Jack=J Susan=S)

S: It's Sara's birthday the day after tomorrow.  1. __________________?

J: Does she like reading? 2. __________________.

S: Well, she has had lots of books already.  Besides, her birthday present last year was also a book.

J: 3. __________________?

S: No, she doesn't like basketball, but she likes football.

J: Get her a football, then?

S:4. __________________?

J: I have no idea, about 20 dollars, maybe.

S: I have only 6 dollars.  5__________________?

J: I have eight.  Why not go and ask John if he would like to join us?

S: That's really a good idea.  Let's do that right away.

1. _________2. _________3. _________4. _________5. _________  ,

下列传染病强制管理的是（）

A.艾滋病

B.出血热

C.黑热病

D.肺结核

E.霍乱

要求冷冻机油的凝点比制冷装置蒸发温度至少低（）℃，闪点比制冷压缩机出口温度高（）℃。

A、2/10~15

B、5/25~30

C、5/5~10

D、15/20~30

上证50指数、上证80指数中的成分股是“蓝筹股”。( )