将对方的MAC地址转换为IP地址
将对方的IP地址转换为MAC地址
将自己的IP地址转换为MAC地址
知道自己的MAC地址，通过RARP协议得到自己的IP地址
| Journalists who write about families as
well as social and cultural issues can count on receiving an annual barrage of
public relations pitches for Valentine’s Day. The PR blitz begins right after
Christmas and continues almost until the big day itself. Daily, sometimes
hourly, e-mails pop up on my computer screen, as publicity agents propose
stories on a variety of love-rated subjects. Some suggest traditional topics. How about interviewing the author of a new book on how to find the perfect mate Or what about a story offering ideas on the best gifts to give to your heartthrob Other suggestions take a thoroughly modern approach to romance. Publicists would be happy to provide information about the newest matchmaking website or the hottest dating coach. There’s even a "psychic medium" who promises to tell radio and television audiences about their A. (A) to show the continuation of this long tradition B. (B) to display the busy life of journalists in the western world C. (C) to highlight the commercialization of a traditional holiday D. (D) to reveal the rapidly changing patterns of holiday celebrations [单选题]电容器围栏应设置( )，防止形成环流，造成围栏发热。
A.接地点 B.断开点 C.连接点 D.接地引线 [简答题]列举“两会”关于努力扩大就业的措施（至少四点）
[多项选择]外源性变应性肺泡炎的特点包括（）
A. 接触抗原4～6小时后，出现干咳、呼吸困难、发热、乏力 B. 接触抗原包括发霉稻草、动物皮毛、有机粉尘等 C. X线胸片出现弥散结节与网状阴影，1～2周内可消散 D. 中性粒细胞正常，嗜酸性粒细胞增多 E. 肺功能符合限制性通气障碍 [单项选择]维护某客户的营业执照信息使用（）交易码
A. 67050选01 B. 67050选04 C. 67050选05 D. 67050选06 [判断题]危险源是指可能造成人员伤亡、疾病、财产损失、工作环境破坏的根源或状态。
A.正确 B.错误 [单项选择]常与结核瘤进行鉴别诊断时需要考虑
A. 肺脓肿 B. 周围型肺癌 C. 肺囊肿 D. 淋巴瘤 E. 结节病 [单项选择]Questions 21 to 22 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news. According to this news, about how many performers in Philharmonic orchestra were in this trip A. 50. B. 100. C. 200. D. 1,000. [填空题]______areas of communication does the author divide into.
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