A.rustB.dirtyC.cleanD.washShips always float on water a……

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

单项选择题Are there any （）before washing the decks?

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

单项选择题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

单项选择题The bosun is satisfied （）your work.

A.for
B.with
C.to
D.at

单项选择题Sometimes, it is necessary for （）to mix the paint.

A. chief officer
B. bosun
C. captain
D. second officer