单项选择题
我们必须仔细使用每件工具并且用完后归还。()
A. We must use all kinds of tools carefully and return it after using. B. We must use every tool carefully and return it after using. C. A+B D. We must use everything carefully and keep it after using.
单项选择题 稀料能稀释油漆。()
单项选择题 驾驶台是船舶的眼睛和耳朵。()
单项选择题 从水线到船底是“吃水”。()