A.At five a.m.B.At four p.m.C.At four a.m.D.At five p.m.
At five a.m.
B. At four p.m.
C. At four a.m.
D. At five p.m.
刮涂作业涂膜的常见缺陷是()等,其涂膜的厚度也很难均匀。
A. 翘皮
B. 开裂
C. 划痕
D. 脱落
E. 翻卷
防腐蚀涂层常用时施工方法有()等涂装方法。
A. 点涂
B. 刷涂
C. 刮涂
D. 浸涂
E. 淋涂
A.5:30.B.8:30.C.5:20.D.5:00.
A. 5:30.
B. 8:30.
C. 5:20.
D. 5:00.