例行测试是一种预防性维护方式，通过周期性地对大量设备进行预测预检，以使故障在发生危害之前就检查出来。 主要由程序周期性地启动，可用一张时间表启动各类例行测试程序，也可由其他程序或人工启动。
在发达国家的研究表明，约85 - 95%的孕妇赞成对HIV病毒进行例行测试咨询。
Studies in developed countries have shown that when pregnant women are offered a routine HIV test with counselling, around 85-95% agree to have one.234.
这个例行程序为你的测试程序提供了访问数据库的路径，但它同时使测试程序设计员无法处理注册程序的准确语义。
This routine provides your test programs with the means to access the database, but it also shields the test programmers from having to deal with the exact semantics of the login procedure.
最终，你将创建越来越多的可调用的例行程序来支持测试。
Eventually, you create more and more of these callable routines to support the tests.
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