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單項(xiàng)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

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單項(xiàng)選擇題

Are there any （）before washing the decks?

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

單項(xiàng)選擇題

The sailors do cleaning and repair work （）the bosun.

A. under the supervision of
B. with the help of
C. in charge of
D. in the charge of

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