瓷粉与烤瓷合金之间最大的结合力应是（）。
A.压缩结合力
B.机械结合力
C.范德华力
D.化学结合力
E.黏接结合力
参考答案：D
The old man sat in front of the television every evening, happy ________ anything that happened to be on.[ ]
A. to watch
B. watching
C. watched
D. to have watched
2015年东莞会调整最低工资标准吗？什么时候调整？调整之后是多少？
