溶胶剂的制备方法()
A.研合法、熔和法和乳化法
B.薄膜分散法
C.熔融法
D.热溶法
E.分散法
参考答案:E
氦是太阳中含量较多的元素,其元素符号为( )
A.H
B.He
C.N
D.Cl
Liu Guozheng, together with Kong Linhui, _____ China in men's table tennis singles event in the
Sydney Olympic Games. [ ]
A. represent
B. represents
C. represents for
D. stand for