氟碳涂料的特点包括()。
A、耐污性
B、自洁性
C、耐酸碱
D、耐腐蚀
E、涂层硬度较低
参考答案：A, B, C, D
The plan was in _________ just because people were unwilling to cooperate.
A．ruins
B．pieces
C．danger
D．trouble
天人相应
