主要由皮肤和呼吸道进入人体的毒物是() ["苯胺","正己烷","甲苯、二甲苯","二氯化碳","三硝基甲苯"]
主要由皮肤进入人体的毒物是() ["三硝基甲苯","苯","甲苯、二甲苯","苯胺","汞"]
下列可引起帕金森病的是() ["苯","甲苯、二甲苯","正己烷","二硫化碳","苯胺"]
下列哪个代谢产物可作为评价苯的接触指标() ["氢醌","尿酚","甲基马尿酸","马尿酸","对氢醌"]
CO中毒患者其皮肤和黏膜可呈现() ["暗红色","青紫色","苍白色","樱桃红色","鲜红色"]
简述胃肠减压术的操作步骤。