预防肿瘤发生有哪些原则?
何谓肿瘤的浸润和转移?转移方式有哪几种?
属于烷化剂的是() ["A．氮芥 ","B．瘤可宁 ","C．足叶乙甙 ","D．塞替派 ","E．三苯氧胺 "]
ADL运动方面不包括() ["A．轮椅上运动和转移 ","B．室内或室外行走 ","C．床上运动 ","D．以慢速跑45米 ","E．公共或私人交通工具的使用"]
通过改水措施可降低我国哪些癌发病率() ["A．食管癌 ","B．膀胱癌 ","C．胃癌 ","D．大肠癌 ","E．肝癌 "]
何谓致癌因素?有哪些重要的外源性致癌因素?
