不定型密封材料包括( )。
A.沥青嵌缝油膏
B.密封条带
C.止水带
D.硅酮密封膏
E.塑料油膏
参考答案:A,D,E
生物既能适应环境又能改变环境。( )
Knowing what colors look good _______ your skin is of great importance when you buy clothes.
A.beyond
B.within
C.against
D.over