单项选择题
A.moors B.moor C.is moored D.mooring
The proper place（）the sling is made up is the square of...
单项选择题The proper place（）the sling is made up is the square of the hatch.
A.which B.where C.when D.how
The port clearance for a ship should be granted（）the co...
单项选择题The port clearance for a ship should be granted（）the completion of loading or discharging in the port.
A.before B.when C.after D.during
The load chart of a ship crane enables the operator to ...
单项选择题The load chart of a ship crane enables the operator to combine the load radius with boom length to determine the（）.
A.maximum counter weight required B.minimum horsepower required C.hoist rope strength D.allowable load
