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Time relays can be divided into AC relays and DC relays according to different power supply requirements, which are respectively used in AC circuits and DC circuits. Time relays can be divided into power-on delay relays and power-off delay relays according to different functions. Time relays can be divided into sealed relays, small relays and micro relays according to their shapes. In addition to the above classification of time relays, time relays also include special types of relays such as resonant relays, stepping relays, proportional relays, etc.逃走的毕龙接到了策划这次杀人案的电话，并且得知只有按照他所说帮他找到些东西才能摆脱杀人的罪名，毕龙只好按着他所说的做。说的一点都不错，西楚国现在真是退无可退，进无可进。08年韩国独立电影界最震撼人心的作品，由新人导演梁益俊自编自导自演的自传式作品。塑造了一个来自底层的暴力人物，他的青春，他的发泄，他的爱情如同燃烧的火焰。的公安特勤人员李旭为捣毁毒枭窝点卧底贩毒集团，为查明毒品交易的上家，李旭故意接近头目的情人阿美却被识破，阿美心狠手辣绑架刘旭好兄弟的妹妹张思怡，以此威胁李旭帮自己运送毒品。阿美将炸弹绑在张思怡身上，并对李旭进行视频监控，防止他中途报警。炸弹被设置成两小时后自动爆炸，李旭要在炸弹爆炸前结束这场生死游戏……