A. 通过TCP连接 B. 封装在UDP数据报中 C. 通过局域网 D. 封装在ICMP包中 参考答案:A
第8题: [单项选择](There) is an unresolved controversy as to (whom) (is) the real author of the Elizabethan plays (commonly) credited to William Shakespeare.() A. There B. whom C. is D. commonly 参考答案:B 答案解析: