题目内容

The unpleasant taste of the medicine prescribed by a famous doctor ______ in his mouth for

A. rests
B. waited
C. prolonged
D. lingered

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The ______ analysis by H.L. Mencken of the American character outraged some and delighted

A. mottled
B. mundane
C. mordant
D. munificent

The chairperson of a woman' s club being addressed by Adlai Stevenson during his campaign

A. laudatory
B. lascivious
C. languish
D. lethargic

A.对实际信号值进行量化编码B.对预测值进行量化编码C.对实际信号值和预测值之差进行量化编码

A. 对实际信号值进行量化编码
B. 对预测值进行量化编码
C. 对实际信号值和预测值之差进行量化编码
D. 对当前信号值和下一个信号值之差进行量化编码

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 nm 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. attachment
B. packet
C. datagram
D. message

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