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问题 单项选择题

投标人可根据工程项目实际情况以及施工组织设计或施工方案，自主确定措施项目费，但其中除外的是（）。

A.夜间施工费

B.安全文明施工费

C.施工排水费

D.施工降水费

答案

参考答案：B

单项选择题

在word2010中，默认保存后的文档格式扩展名为（）。

A.*.dos

B.*.docx

C.*.html

D.*.txt
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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 (71) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (72) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (73) .
As administrators seek to block dangerous email attachments through the recognition of well-known (74) , 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 (75) access to your network.

A．memory

B．caches

C．ports

D．registers
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