属于Ⅰ级易燃液体的是:() ["A、甲醇","B、煤油","C、丁醇","D、甘油"]
产生拒爆的原因是()。 ["A.炸药变质","B.雷管电阻丝折断","C.连接的雷管数量超过发爆器的起爆数","D.连线不实E.封泥不满"]
变形缝的基层应采用不燃材料,表面层不应采用()材料。 ["A、易燃","B、可燃","C、难燃","D、不燃"]
可燃气体的爆炸下限数值越低,爆炸极限范围越大,则爆炸危险性。() ["A、越小","B、越大","C、不变","D、不确定"]
根据引起爆炸的原因和过程不同,可将爆炸分为()。 ["A.物理爆炸","B.化学爆炸","C.核爆炸","D.聚变","E.裂变"]
利息率是怎样确定的?