U.S. universities.
Web streams use a locking model to prevent multiple consumers from interleaving reads. When you call getReader(), the stream becomes locked. While locked, nothing else can read from the stream directly, pipe it, or even cancel it — only the code that is actually holding the reader can.，这一点在同城约会中也有详细论述
Some smoke alarms have been designed to be ultra-sensitive. Aspirating devices, for example, constantly suck in air in order to detect even small quantities of smoke in a room. They are often used in commercial settings, including server rooms packed with expensive computer tech.，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
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