以水贴合直间接胶膜，膜厚不均最主要原因是（）
A.脱脂不全，水分布不均
B.干燥不当
C.胶膜太薄
D.胶膜贴合前已曝光硬化
参考答案：A
China has special football schools where children acquire ball skills________a formal education.[ ]
A. as well as
B. as good as
C. as far as
D. as long as
提出元素周期律并绘制了第一个元素周期表的科学家是( )
A．戴维
B．阿伏加德罗
C．门捷列夫
D．道尔顿
