【多选题】【消耗次数：1】
本地计算机被感染病毒的途径可能是_____。
①
使用U盘
②
应用程序发生变化，偶然性的成为病毒
③
使用网络
④
电压不稳
参考答案：
复制
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相关题目
【单选题】
计算机预防病毒感染有效的措施是（ ）。
①
定期对计算机重新安装系统
②
给计算机安装防病毒的软件，并常更新
③
不要把 U 盘和有病毒的 U 盘放在一起
④
不准往计算机中拷贝软件
随机题目
【单选题】
23. Realizing that he hadnt enough money and ______ to borrow from his father, he decided to sell his watch.
①
not wanted
②
not to want
③
not wanting
④
. wanting not
【单选题】
20.The girl’s voice was so low that we could ________ hear her.
①
seldom
②
almost
③
only
④
hardly
【单选题】
7.When we go abroad we are always being ______ around like a group of mentally disabled people.
①
guided
②
.ushered
③
introduced
④
displayed
【单选题】
9. All correspondence ______ to the editor should be sent by airmail.
①
addressed
②
sent
③
signaled
④
went
【单选题】
11.Since family ______children’s character, he encouraged parents to teach children reading.
①
formed
②
shaped
③
built
④
made
【单选题】
17. It was the headmaster _____ gave us the leave to go to the concert.
①
who
②
whom
③
that
④
which
【单选题】
15.It was on the day my first son was born _____ I put them in the soil.
①
when
②
who
③
that
④
where
【单选题】
19.Our school library is ________ closed for repairs.
①
shortly
②
quickly
③
temporarily
④
rapidly
【单选题】
24. They are teachers and dont realize ______ to start and run a company.
①
what it takes
②
what takes it
③
what they take
④
what takes them