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3. Installation of Engineering Dependent Modules　　此时，一个神秘人出现，枪杀伊藤，救出了丁水妹。后来，老百姓说是神龙显灵，杀了鬼子头。丁水妹从此对这个“神龙”牵肠挂肚。深夜，缉毒大队长接到神秘电话，匆忙赶到市郊的仓库，赫然发现三年前派出的卧底被吊在旗杆上，手筋、脚筋俱被挑断；当他回到家中，在洗澡间猛然发现妻子的裸尸，镜子上写着血债血偿。大队长面对好友及妻子的惨死，痛不欲生，疯狂扫荡本市的贩毒集团，却发现自己已经深陷泥沼；英勇睿智的铁汉收拾悲伤、复仇的心情，重新部署侦破工作，随着线索一丝丝浮出水面，发现妻子的惨死竟然与追缉三年的贩毒首脑有关；幕后真相即将揭示，关键证人却一个个离奇失踪，贩毒首脑竟也服毒自杀，仿佛有一堵无影之墙始终无法跨越。 　　本剧情节迭起、悬念不断，毒品、血腥、生死搏命充斥了情节的发展，真实反映了一场生与死的抗争，一场人性和兽性的搏杀，一场充满了死亡、欺诈和恐怖的战斗。船只就在淮水岸边，只要尹旭安全渡河回到淮南，后果可就严重了。Polylactic acid (PLA) is a new bio-based and renewable biodegradable material, which is made of starch raw materials proposed by renewable plant resources (such as corn). Starch raw materials are saccharified to obtain glucose, then glucose and certain strains are fermented to produce high purity lactic acid, and polylactic acid with certain molecular weight is synthesized by chemical synthesis method. It has good biodegradability, can be completely degraded by microorganisms in nature under specific conditions after use, and finally generates carbon dioxide and water without polluting the environment, which is very beneficial to environmental protection and is recognized as an environment-friendly material. This thing is actually a long piece, and then "curled up" in it and wrapped in a cylinder shape. What's the use? You will see it in a short time.