单项选择题
A.五层镀色油漆 B.三层镀色油漆 C.四层油漆层 D.三层油漆层
A.1400mm×820mm B.1400mm×830mm C.1450mm×830mm D.1450mm×840mm
A.1.70 B.1.75 C.1.80 D.1.85