单项选择题
Captain, I already（）(交班) my duty to the new coming A.B.
A. passed B. gave C. took over D. handed over
单项选择题 During working time, everybody has to（）(注意)their’s own and other people’s safety.
单项选择题 There is signal light on the （）(桅杆).
单项选择题 There are some （）(贯穿螺栓) in the toolbox.
