相关考题
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单项选择题
Cement wash is a mixture of cement powder and （）.
A.fresh water
B.steel
C.paint
D.wood -
单项选择题
The principle protective coating is （）.
A. cement wash
B. paint
C. bitumen
D. undercoat -
单项选择题
（）are the three different coatings which can protect metal from corrosion.
A. Cement wash, bitumen and paint
B. Metal primers, undercoats and topcoats
C. Varnishes, heat-resistant paints and anti-fouling paints
D. Cement wash, primer and undercoat
