罗乐勤:住户无付酬服务核算若干问题研究 关键词:住户无付酬服务 时间使用统计 核算 [gap=580]Key words:Household unpaid services ; Time use statistics ; Accounts
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根据由劳动统计局的最新美国人时间使用调查,在2005年平均美国公民一天看电视的时间为2.6小时。
According to the latest American Time Use Survey by the Bureau of Labor Statistics, in 2005 the average U. S. citizen watched 2.6 hours of television a day.
用户可以查询撤销空间使用率,事务并发性,实例中最长的查询的运行时间等统计信息。
You can see statistics such as undo consumption rate, transaction concurrency, and lengths of queries run in the instance.
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