单项选择题
The rusty plates should be scrapped and brushed to （）(出白金属).
A. clean B. smooth surface C. bare metal D. clear
单项选择题 Loose paint and scale are removed with a （）(刮刀).
单项选择题 We can remove the heavy rust on the plate with a （）(敲锈锤).
单项选择题 （）(耐热漆) are for radiators and pipes and for the ship’s funnel.
