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Principle: Traditional tobacco is smoked by ignition. The temperature of tobacco when burning reaches 800 degrees. Nicotine, carbon monoxide, tar, etc. will be produced in the process of tobacco burning. At the same time, tobacco itself also has fragrance released. Smokers are mainly satisfied by smoking nicotine and tobacco fragrance. There are more than 2,000 kinds of harmful ingredients produced by smoking, The main components that cause harm to human health come from tar produced in the combustion process, However, the working temperature of the heating non-burning electronic cigarette is about 300. Not more than 300 degrees, Tar is mainly produced at over 400 degrees, In other words, Heating does not burn electronic cigarettes. Due to the relationship between temperature, A small amount of tar is produced, which can be ignored. Moreover, the temperature at which heating does not burn is only about 300 degrees, so there is no combustion, no open flame and no soot. However, the aroma and smell of tobacco are still released, and smokers can also obtain nicotine, so that smokers can also obtain the feeling of smoking real cigarettes.1.? Ventilation, before each drive, first open all the windows, conditional? Then, open all the doors.一时间竟不知道该怎么说。富二代阿旺虽然其貌不扬，却因颇具爱心而邂逅了邻家女孩小雨。但阿旺傲慢的性格、花天酒地的生活作风，让小雨很快不堪其负与其分手。阿旺却认为有钱就不怕找不到女朋友，为了证明给小雨看，便开始了他的相亲之路。在相亲历程中，有看脸的、有拜金的、甚至还有诈骗的……阿旺通过一段段波折又饱含戏剧性相亲经历，见识了人间百态， 也感知了感情的真正意义。20世纪80年代后期，狼牙侦察大队狙击手何卫东为救观察手范天雷，被外号“蝎子”的敌狙击手狙杀。何卫东四岁的儿子何晨光接过了父亲血染的79式狙击步枪瞄准镜。15年后，范天雷已是狼牙特战狙击手教官，他鼓励全国青少年级别的武术冠军何晨光、颇有打枪天赋的小混混王艳兵、朴实却有超常毅力的农村少年李二牛一起参军。