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Facebook is, in Silicon Vallese, a “social network”: a website for keeping track of your friends and sending them messages and sharing photos and doing all those other things that a good little Web 2.0 company is supposed to help you do. It was started by Harvard students in 2004 as a tool for meeting—or at least discreetly ogling—other Harvard students, and it still has a reputation as a hangout for teenagers and the teenaged-at-heart. Which is ironic because Facebook is really about making the Web grow up.
一个油缸制动或缓解一次的耗油量是相同的,缓解时油缸的推力和制动时油缸的拉力也是相同的。
下面不属于新规范出台背景是()
体温调节中枢功能失常包括:①();②();③()。
涂料的保管应注意哪些问题?
所谓()是人们在整理、研究大量图书资料的基础上,按照一定的分类体系编成的。
人格具有稳定性,主要表现为()。
传输系统能够提供的数据业务接口有()。
Ⅱ级铁路,路段设计行车速度120(km/h),区间线路最小曲线半径困难地段为()。
某饭店使用不洁餐具,引起甲肝传播。该饭店的行为属于()