单项选择题
A ship’s bottom is given a coating of （）which contains poison.
A. varnish B. anti-fouling paint C. boottopping paint D. primer
单项选择题 Repaint the draft figures, plimsoll marks, ship’s name and port of registry （）.
单项选择题 Varnish gives a clear protection coat to （）.
单项选择题 （）are for radiators and pipes and for the ship’s funnel.
