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问题 填空题

如图是一节普通干电池，一节普通干电池的电压为______伏，构造中的碳棒为干电池的______极（选填“正”或“负”）．

答案

一节普通干电池的电压为1.5伏，碳棒为干电池的正极，锌片为干电池负极；

故答案为：1.5；正．

单项选择题

A企业于2004年初购入一项专利权，实际成本为100万元，法律有效年限为12年，估计受益年限为10年。2004年末，对该项无形资产进行检查，估计其可收回金额为72万元。2005年1月30日，A企业以70万元的价格出售该专利权，不考虑相关税费，则出售该专利权时应确认的营业外支出金额为( )万元。

A．-20

B．1.33

C．2

D．20
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单项选择题

Pharming is a scamming practice in which malicious code is installed on a personal computer or server, misdirecting users to (71) fraudulent Web sites without their knowledge or consent. Pharming has been called "phishing without a lure".

In phishing, the perpetrator sends out legitimate- (72) looking e-malls, 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 (73) victimized 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 (74) bookmark entry. Some spyware removal programs can correct the corruption, but it frequently recurs unless the user changes browsing. (75) habits,

（71）是（）

A.few

B.fraudulent

C.normal

D.structured
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