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Command mode: Pay attention to encapsulating requests as objects, support changes in requests, and realize decoupling between behavior requestors and behavior implementers by abstracting a group of behaviors as objects.而就在那个晚上，舍曼和佩妮竟偷偷乘上时光机，进行了一次惊心动魄的时空大冒险...If the steam parameters are increased, it will help to improve the utilization efficiency of waste heat, increase the power generation and increase the income of waste plant, but at the same time it will also aggravate the corrosion of waste heat boiler materials, shorten the service life of equipment and increase the depreciation cost. The boiler parameters of the first phase of Guangzhou Likeng Waste Incineration Power Plant are 5.4 MPa and 490 ℃, reaching the sub-high pressure parameters. The economy of adopting the sub-high temperature and sub-high pressure parameters and the adaptability to China's national conditions are still being explored.　　via天涯小筑：警探Grace的儿子不幸惨死在犯罪头目Jimmy Laszlo领导的黑帮家族手中。虽然Jimmy Laszlo没有亲自动手，但他对此事难辞其咎。更糟的是，Grace自己的行为可能与她儿子的死有关。警方不打算追查此事，但Grace决不放弃。她决定私自行动，以卧底身份混入Jimmy Laszlo的团伙，秘密对其成员展开调查。Grace和Jimmy开始寻找团伙内部的叛徒——巧合的是，这个叛徒很可能就是杀害Grace的儿子的元凶。在此过程中，Grace不由自主地爱上Jimmy，她该作何选择Jimmy又该作何选择-Execute method through EventHandlerAction: Wave with your hand to refuse.