这种材料接触热表面时会释放出危险的气体
A.This material replaces dangerous fumes when it touches hot surface. B.This material releases dangerous fumes when it touches hot surface. C.On contact with hot surfaces,this material produces acrid fumes.正确答案B
这种材料接触热表面时会释放出危险的气体
A.This material replaces dangerous fumes when it touches hot surface. B.This material releases dangerous fumes when it touches hot surface. C.On contact with hot surfaces,this material produces acrid fumes.正确答案B
