Many systems and monoliths that have been built a long time ago were also modular, but their modules were mostly based on the classical Three-tier Architecture. Such a setup has a low testability, because the Business layer required the Data Access Layer (DAL) to operate even in unit tests (or you had to do a code surgery to find seams, if there were ones).
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"The fans have been like the energy for the show from the very beginning," he said.
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（二）旅客自带行李灭失或者损坏的，每名旅客不超过1800计算单位；