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The creepage distance is divided into two grades, and the creepage distance of 300V grade is ≥ 5 mm; Creepage distance of 600V grade ≥ 7mm. The creepage distance is designed for 220V voltage according to 300V grade, and the creepage distance is designed for 380V voltage according to 600V grade. For 220V and 380V high-power parts, character marks are applied to allow cuts in PCB design to meet the requirements of creepage distance.The function of the intermediary mode is to remove the coupling relationship between objects. After adding an intermediary object, all related objects communicate through the intermediary object instead of referencing each other. Therefore, when an object sends a change, only the intermediary object needs to be notified. Intermediaries loosely couple objects and can independently change their interaction.幸福的家庭是令人羡慕和相同的。而灿烂、温馨的笑容印在了妻子马小霜、丈夫陈专强以及女儿悦悦的脸上。他们有着令人赞叹、羡慕的三口之家，然而，天有不测风云，下岗的窘迫、丧夫的痛苦、婆婆的误解、家人的无助，顿时将马小霜原本所拥有的一切击得粉碎。面对自己与女儿今后的生活，她显得那么无奈、措手不及。黑帮大哥的女儿游敏（张敏 饰）在美国生活并学得出色身手，帮中长者为了清理门户特邀游敏从美国返港，岂料叛徒雷豹反制，重伤的游敏漂流海上，被在游艇上钓凯子的神婆（叶德娴 饰）和阿贞（邱淑贞 饰）母女救起。游敏清醒后却失去了记忆，神婆和阿贞从游敏的穿着推断她可能是被绑架的富家千金，遂不断打探以求高额报酬。另一方面，雷豹掌管帮会以后试图同日本人合作，同时派出手下寻找游敏下落。阿贞与聋哑男友亚杰（张学友 饰）感情甚笃，无奈神婆坚决反对，阿贞仍然为了偿还母亲赌债与游敏去夜总会陪酒。雷豹的两名性格扭曲的手下残杀舞小姐，而游敏与雷豹也在舞厅相遇，同时引出了亚杰曾经是黑帮前辈的身份，一场混战不可避免……何员外挥臂道，都让让。4. Every time the same type of skill determines that bleeding is successful, bleeding damage will occur directly after superposition.而高中入学前的两个人——伊理户水斗和绫井结女以意想不到的形式重逢。