【单选题】【消耗次数：1】
下列四个选项中不属于计算机病毒特征的有 ：（ ）
①
文件大
②
可触发性
③
破坏性
④
欺骗性
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相关题目
【单选题】
下列各项中，不属于防范计算机病毒的措施是( )。
①
规范使用U盘的操作
②
在计算机上安装防火墙
③
不准往计算机中拷贝软件
④
谨慎下载与接收网络上的文件和电子邮件
【简答题】
计算机病毒的可触发性是指计算机在感染了病毒后，很多计算机病毒并不会立即发作，而有一定的[填空]。
【单选题】
计算机病毒通常要破坏系统中的某些文件或数据，它__________。
①
属于主动攻击，破坏信息的可用性
②
属于主动攻击，破坏信息的可审性
③
属于被动攻击，破坏信息的可审性
④
属于被动攻击，破坏信息的可用性
随机题目
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People under stress have performed _____feats of strength, like lifting an automobile off an accident victim.
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specific
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extraordinary
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abrupt
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abnormal
【单选题】
Operations which left patients _____and in need of long periods of discovery time now leave them feeling relaxed and comfortable.
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exhausted
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unhealthy
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upset
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fearful
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Outside my office window there is a fire _____on the right.
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escape
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ladder
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steps
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stairs
【单选题】
The fox fell into the _____the hunter had set for it.
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bush
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trap
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trick
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circle
【单选题】
You should know better than _____your little sister at home by herself.
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to leave
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leaving
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to have left
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left
【单选题】
The reason that his property was confiscated by the country, it _____, was that he was involved in a lot of fraudulent activities during the war.
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was turned out
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was being turned out
③
being turned out
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turned out
【单选题】
By the end of next month we _____this assignment.
①
will finish
②
will be finishing
③
will have finished
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have finished
【单选题】
Our teacher recommended that we _____as attentive as possible when we visit the museum.
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are
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shall be
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be
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were
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_____native to North America, corn has now spread all over the world.
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In spite of
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That it is
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It was
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Although
【单选题】
Televisions enable us to see things happen almost at the exact moment _____.
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which they are happening
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they are happening
③
which they happen
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they have happened