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问题 单项选择题

患者男性40岁，行左上颌结节传导麻醉下拔除，3天后出现发热，白细胞升高，左侧面部深区疼痛，张口受限，左下颌升支后深压痛。该患者最可能的诊断是（）

A．颞下间隙感染

B．颞间隙感染

C．翼颌间隙感染

D．咬肌间隙感染

E．干槽症

答案

参考答案：A

解析：

临床上有面部炎症的全身表现，局部有相应区域受累的表现。

单项选择题 A1/A2型题

抗原抗体相遇，发生特异性结合的时间（）。

A.数秒到数分钟

B.1～5min

C.5～10min

D.10～15min

E.30min
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单项选择题

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (46) from a friend who asks you to open it. This is what happens with Melissa and several other similar E-mail (47) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (48) .

A. virtualB. virus C. worms D. bacteria

As administrators seek to block dangerous email attachments through the recognition of well-known (49) , virus writers use other extensions to circumvent such protection. Executable (.exe)files are renamed to. bat and. cmd plus a whole list of other extensions and will still run and successfully infect target users.
Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the (50) access to your network.
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