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 高等继续教育 / 计算机统考
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37、下列选项中,属于计算机病毒特征的是______。
A.偶发性
B.周期性
C.潜伏性
D.免疫性
  积分
 参考答案:
 佳题速递:
  • 下面不符合网络道德规范的行为是______(A) 下载网上的驱动程序 (B) 不付费看NBA篮球赛 (C) 不付费使用试用版的软件 (D) 把好朋友和其女友亲吻的照片发布在网上计算机基础
  • 49、在Windows 操作环境下,要将整个屏幕画面全部复制到剪贴板中所使用的键是______。 A.Print Screen B.Page Up C.Alt + F4 D.Ctrl + Space计算机统考
  • 35、When weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why? The sun makes the earth hot, but it cannot make the weather very hot. Although the air over the earth becomes hot, the air over the water stays cool. The hot air over the earth rises. Then the cool air over the water moves in and takes the place of the hot air. When you are near a lake or an ocean, you feel the cool air when it moves in. You feel the wind, and the wind makes you feel cool. Of course, scientists cannot answer all of our questions. If we ask, "Why is the ocean full of salt?" scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into the cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask, "What happens to the salt in the ocean? The ocean does not get more salty every year." Scientists are not sure about the answer to this question. We know a lot about our world. But there are still many answers that we do not have, and we are curious.统考英语阅读理解
  • 关于遗忘的三大学说是痕迹衰退说、干扰抑制说、()。A、动机说B、压抑说C、同化说D、提取失败说消费者行为学
  • 36、He _ _ _ _ _ _ _ less time reading stories about film stars than before. A.takes B.spends C.costs D.pays统考英语词汇与语法
  • 63、- Paul, _ _ _ _ _ _ _ ? - Oh, that's my father!And beside him, my mother. A.what is the person over there B.who's talking over there C.what are they doing D.which is that统考英语交际英语