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单项选择题
A.let
B.give
C.prevent
D.take
单项选择题
A.rust
B.dirt
C.dust
D.air
单项选择题
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
单项选择题
A. cement wash, bitumen and paint
B. primer, undercoats and top coats
C. topside paint, boot-topping paint and bottom paint
D. primer, cement wash and paint