问题:
A . Lower the stern ramp,raise/open the stern door,turn on ventilation for cargo holds
B . Turn on ventilation for cargo holds,raise/open the stern door,lower the stern ramp
C . Turn on ventilation for cargo holds,lower the stern ramp,raise/open the stern door
D . Raise/open the stern door,lower the stern ramp,turn on ventilation for cargo hold
● 参考解析
本题暂无解析