在配置华为路由器和思科路由器搭建的帧中继网络时，你应该怎样配置华为路由器的链路封装格式？（假定思科采用默认封装格式）（） A: arpa B: ansi C: ietf D: nonstandard E: F: 933a G: Cisco

Which of the following statements about how to choose a level of diction is NOT true? ( ). A: Dialect is specific words or phrases used in different contexts, professions, and trade. B: Choose the level most appropriate for the audience you are writing for. C: Slang is an informal, nonstandard form of language which consists of newly created and rapidly changing words and phrases. D: You may choose to use different levels of diction for various purposes.