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问题 单项选择题

口语风格是说话人在口语实践中，在音量、声调、节奏、语气、用词、造句、修辞以及神情、姿态、动作等多方面表现出来的整体性特征，而不是其中某一个因素或某一方面的特点。这体现了口语风格特点的（）。

A.独特性

B.稳定性

C.综合性

D.重复性

答案

参考答案：C

单项选择题

已知某车间24h均匀用水，每小时50m3，配水泵站每天供水两次，分别为上午4～8时和下午16～20时，每小时供水150m3，则水塔调节容积为（）m3。

A．100

B．200

C．300

D．400
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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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