单项选择题
A.lifted B.lowered C.opened D.closed
The unlashing work must be finished before （）.A.dischar...
单项选择题The unlashing work must be finished before （）.
A.discharged B.being discharged C.discharging D.discharges
We haven’t got enough （）to do the work.A.headsB.handsC....
单项选择题We haven’t got enough （）to do the work.
A.heads B.hands C.fingers D.eyes
Stow the derricks （）before sailing.A. fore and aftB. up...
单项选择题Stow the derricks （）before sailing.
A. fore and aft B. up and down C. port and starboard D. left and right
