符合 802.1 标准的网桥是由各网桥自己决定路由选择，局域网上的各站点不负责路由

夫妻财产协议是针对夫妻结婚后的财产而言的。()

海螵蛸是（）。

A.螳螂的卵块

B.牡蛎的壳

C.乌贼的内壳

D.鲍鱼的贝壳

排便时，间歇性带血，并有肿物脱出肛门外，排便完自行还纳，诊断为

A．Ⅱ度内痔

B．Ⅲ度内痔

C．直肠息肉

D．外瘘

E．直肠粘膜部分脱垂

常见的人体寄生线虫中，哪些属土源性？哪些属生物源性？

For each blank, choose the best answer from the four choices and write down on the answer sheet.

(66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.

(67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.

(68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable.

(69) is a device used to connect two separate network that use different communication protocol.

(70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

68（）

A．ADSL

B．FTTC

C．HFC

D．FTTH