单项选择题
A.cranes/derricks B.crane/derrick cycles C.crane/derrick cycle time D.weight per package
The patches where rust have been removed should be wipe...
单项选择题The patches where rust have been removed should be wiped clean before paint is（）.
A.applied B.supplied C.replied D.complied
The permant dunnage attached to the frames of the ship ...
单项选择题The permant dunnage attached to the frames of the ship that aids in ventilation is (are) the（）.
A.hatch boards B.tank top C.hatch beams D.sweat bettens
The productivity of working shifts can be improved thro...
单项选择题The productivity of working shifts can be improved through a decrease of（）.
A.working hours B.gangs C.idle time D.weight per set
