A.hull B.cabin C.cargo hold D.deck
单项选择题()can give a hard-wearing surface and the required color.
A.Primers B.Undercoats C.Topcoats D.Cement wash
单项选择题Undercoats are used ()the primer before the topcoat.
A.in B.over C.to D.with
单项选择题Primer coats are applied to a bare metal surface to ()protection against rust.
A.let B.give C.prevent D.take
单项选择题Primer coats are applied to a bare metal surface to give protection against ().
A.rust B.dirt C.dust D.air
单项选择题()is used in bilges and peak tanks.
A.Bitumen B.Paint C.Cement wash D.Varnish