班用步战车训练时 ,车内产生的一氧化碳、二氧化碳、氮氧化物和油料废气、灰尘等 ,对乘员有一定危害 ,可使之出现胸闷、憋气、呛咳等症状。如不注意防护 ,对乘员健康不利 ,影响战斗力。预防方法是 :一是训练中尽量打开通风设备 ;二是训练结束后用排风扇排除车内有害气体 ;三是 Class training with step chariot, the car generated carbon monoxide, carbon dioxide, nitrogen oxides and fuel emissions, dust and other occupants have a certain hazard, can make it appear chest tightness, suffocation, cough and other symptoms. If you do not pay attention to protection, adverse to occupant health, affecting combat effectiveness. Prevention methods are: First, try to open the ventilation training equipment; Second, after training with exhaust fans to exclude harmful gases inside the car; Third