单项选择题
The nut is loose. Lend me a screwdriver, please.（）
A.螺帽松了。请借给我一个螺丝刀。 B.螺帽松了。请借给我一个钳子。 C.螺栓松了。请借给我一个螺丝刀。 D.螺栓松了。请借给我一个钳子。
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.（）
单项选择题 Loose paint and scale are removed with a scraper.（）
