题目内容
The processes appear to run simultaneously because the user’s sense of time is much slower than the processing speed of the computer.
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A database is designed, built, and populated with data for a specific purpose.
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Because this pay-for-what-you-use model resembles the way electricity, fuel and water are consumed; it is sometimes referred to as utility computing.
二阶导为零的点称为拐点。
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