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Conclusion: As the name implies, singleTop, if the current instance is at the top of the current task stack, it will be reused directly to test scenario 1. If the current instance is no longer at the top of the stack, create a new instance, such as Test Scenario 2, because it jumps from FirstActivity to SecondActivity every time. Although the SecondActivity instance already exists at the time of jumping to SecondActivity for the second time, another SecondActivity instance is created because it is not at the top of the stack.Applicable scenario: If you have a small number of connections that use very high bandwidth and send a large amount of data at a time, perhaps the typical IO server implementation may fit very well.6. MDT team members have the opportunity to obtain professional continuing education;在山上咱们占优势，耗也要耗死他们。青梅竹马，相爱相杀，是冥冥中自有安排，还是一个愿打一个愿挨？来自离异家庭的少女林夕迟与傲娇自负的冰山射手许放风格迥异的人生，似乎注定要纠缠在一起。 因为童年时母亲缺席，林兮迟一直对这世界是否存在稳定不变的感情存有疑虑。而高冷少年许放，看着她从顽童长成少女，早已把给她稳 定不变的关系作为终身守护的目标。当林兮迟还没有搞清楚已进入省射击队的种子选手许放到底为何放弃去北京来到自己所在的蓉大，就再度进入了被虐模式。友达以上恋人未满的二人，很快因各自的出色分别成为学校焦点，却一再否认相爱的可能。林兮迟一直神经大条情窦不开，许放只能将一次次表白咽了回去，霸道毒舌变成亲近林兮迟的唯一方式。 在经历种种考验之后，林兮迟终于意识到许放对自己从始至终的陪伴和守候，才是全世界最珍贵的存在。而这一次，她决定，哪怕面对自己最恐惧的分离，她也要勇敢走下去，成为他最坚定的力量，陪伴他完成夺冠之路。Green mushroom recovery medicine对于徐文长如此直面顶撞戚继光，杨长帆和庞取义都很慌。