同步发电机励磁系统中整流装置的主要任务是什么？

Pharming is a scamming practice in which malicious code is installed on a personal computer or server, misdirecting users to ___29___ Web sites without their knowledge or consent. Pharming has been called "phishing without a lure".

In phishing, the perpetrator sends out legitimate-___30___ e-mails, appearing to come from some of the Web’s most popular sites, in an effort to obtain personal and financial information from individual recipients. But in pharming, larger numbers of computer users can be ___31___ because it is not necessary to target individuals one by one and no conscious action is required on the part of the victim.In one form of pharming attack, code sent in an e-mail modifies local host files on a personal computer. The host files convert URLs into the number strings that the computer uses to access Web sites. A computer with a compromised host file will go to the fake Web site even if a user types in the correct Internet address or clicks on an affected ___32___ entry. Some spyware removal programs can correct the corruption, but it frequently recurs unless the user changes browsing ___33___

31（）

A.victimized 

B.personate 

C.identity 

D.latency

患者，女，59岁，高血压史10年，临床：全口牙龈边缘及牙龈 * * 充血水肿，牙龈增生覆盖全牙冠的1/3～1/2，PD4～7mm，前牙出现松动移位。

该患者的治疗计划，哪一项最准确

A．牙周洁治刮治
B．定期更换降压药
C．口腔卫生宣教定期复查
D．必要时，可作牙周手术
E．A+B+C+D

男性，23岁。发作性四肢抽搐6个月加重伴头痛、呕吐2周住院。2年前无诱因出现突发意识不清，四肢抽搐，约持续数分钟停止，20分钟左右完全清醒，无任何不适。此后每隔1～2个月发作一次，症状同前。曾服药治疗（具体不详），疗效欠佳。2周前症状加重，四肢抽搐发作较频繁，隔2～3天即发作一次，每次发作约持续数分钟，醒后感头胀痛明显，严重时出现呕吐，为胃内容物。查体：意识清楚，双侧视 * * 轻度水肿，神经系统检查无明显异常。提示：MRI检查：左额叶脑内囊实性占位病变，增强扫描后实质病灶及囊壁均有增强效应。

初步诊断考虑为（）。

A.脑脓肿

B.脑膜瘤

C.炎性肉芽肿

D.脑胶质瘤

E.神经鞘膜瘤

F.血管网织细胞瘤