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B类爆炸物由美国运输部确定的，具有可燃性灾害的炸药。诸如推进剂、照相用闪光粉和一些特殊的烟火剂等
expl. class B explosives
A类爆炸物由美国运输部确定的,具有爆炸性或者是巨大危害的炸药，诸如达纳迈特、叠氮化铅、爆破雷管和起爆药等
expl. class A explosives
C类爆炸物由美国运输部确定的，含有A类或B类炸药组分或者两类炸药组分都有的炸药，但其中含量有限
expl. class C explosives
类爆炸物
: 4 phrases in 1 subject
Explosives and Explosive Ordnance Disposal4

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