单项选择题
A.written B.painted C.painting D.repaired
Ships always float on water and they are easy to （）.A.r...
单项选择题Ships always float on water and they are easy to （）.
A.rust B.dirty C.clean D.wash
The most common kinds of （）used on board ship are as fo...
单项选择题The most common kinds of （）used on board ship are as follows: primer coat, undercoat, topcoat, heat-resistant paint, varnish and anti-fouling paint.
A.cement wash B.bitumen C.paint D.varnish
Are there any （）before washing the decks?A.requireB.req...
单项选择题Are there any （）before washing the decks?
A.require B.required C.requirements D.requiring
