什么是ramp？有什么作用？
什么是ramp？有什么作用？
相关考题：
Which of the following is the stated proper sequence before commencing cargo operations aboard Ro-Ro vessels?A.Start ventilation，lower the ramp，notify engine roomB.Lower the ramp，start ventilation，notify engine roomC.Notify engine room，lower the ramp，start ventilationD.Start ventilation，notify engine room，lower the ramp
单选题Which of the following is the stated proper sequence before commencing cargo operations aboard Ro-Ro vessels?（）AStart ventilation，lower the ramp，notify engine roomBLower the ramp，start ventilation，notify engine roomCNotify engine room，lower the ramp，start ventilationDStart ventilation，notify engine room，lower the ramp
问答题什么是会计等式？它反映了什么？有什么作用？