單項選擇題

Ships always float on water and they are easy to （）.

A.rust
B.dirty
C.clean
D.wash

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單項選擇題

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

單項選擇題

Are there any （）before washing the decks?

A.require
B.required
C.requirements
D.requiring