危险品库、压力容器、储油罐等则是固定源,但其区域范围不固定。
参考答案:错
-What is Amy cooking in the kitchen?
-Fish, I guess.______ good cook she is!.
A.What a
B.What
C.How a
D.How
由40%的棉,30%人造纤维短纤和30%合成纤维短纤混纺制成的未漂白机织物(该织物220g/m2)