单项选择题
Please cover the bilge cover well. （）
A.请盖好污水井盖。 B.请修理污水井盖。 C.请盖好压载水盖。 D.请盖好淡水盖。
单项选择题 The nut is loose. Lend me a screwdriver, please.（）
单项选择题 Cleaning, painting and repairing are known as maintenance work.（）
单项选择题 Sailors spend most of their time in scraping and painting.（）
