A.闪点 B.自燃点 C.熔点 D.爆炸极限
A.8 B.16 C.24 D.48
A.1,1.4,0.9 B.1.1,1.4,0.9 C.0.9,1.5,0.9 D.1.1,1.5,0.9
A.1 B.2 C.3 D.4
A.戊类 B.乙类 C.丙类 D.丁类