鸡皮皱面层涂饰施工要点有（）。
A.基层处理
B.涂刷底油
C.刮腻子并抹平
D.涂饰鸡皮皱面层
参考答案：A, B, C, D
Although many people thought the former advice was valuable for us,personally I prefer
.
A．the latest
B．the latter
C．last
D．later
生态红线区一般可进一步划分为（）
A.一级管控区
B.二级管控区
C.三级管控区
D.四级管控区
