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问题 单项选择题 A1/A2型题

评价胸部影像是否标准，最关键的一项是（）

A.左右胸锁关节对称

B.肺纹理能连续追踪

C.肺尖充分显示

D.心脏边缘锐利

E.肋膈角包括完全

答案

参考答案：B

解析：评价胸部影像是否标准，最关键的一项是肺纹理能连续追踪。

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 (17) fraudulent Web sites without their knowledge or consent. Pharming has been called "phishing without a lure".
In phishing, the perpetrator sends out legitimate- (18) 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 (19) 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 (20) bookmark entry. Some spyware removal programs can correct the corruption, but it frequently recurs unless the user changes browsing. (21) habits,

A. few B. fraudulent C. normal D. structured
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单项选择题

ISDN是钟开放型的网络，但提供的服务不包括

A．端到端的连接

B．传输声音和非声音的数据

C．支持线路交换

D．支持模拟传输
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