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问题 单项选择题

以下关于IS-IS协议描述不正确的是（）。

A.IS-IS是一种链路状态路由协议

B.IS-IS可以支持纯CLNP网络和IP网络，但不支持CLNP和IP双重网络

C.IS-IS通过传递协议数据单元来传递链路信息，完成链路数据库的同步

D.IS-IS可以支持TE、IPv6

答案

参考答案：B

阅读理解

阅读短文，看表格，完成下列各题。

      There are forty-eight students in my class. Some students go to school on foot. Some students go to

school by bike. Some students go to school by bus. Some students go to school by subway. Some students

go to school with other ways.

1. There are _____________ (填数字) students in my class.

2. _____________ (填数字) students go to school by subway.

3. Sixteen students go to school _________________.

4. Eight students go to school _____________ bike.

5. Eight students go to school by _____________.
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多项选择题

利率互换（基准互换）市场利差为下面哪些条件下可以成交？（）

A、正数

B、零

C、负数

D、小数
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