单项选择题
The ship is listing too much due to your faulty method in loading operation．You must keep her （）.
A.flat B.up C.upright D.vertical
单项选择题 The ship（）about 1/2 miles southward of the lighthouse.
单项选择题 The proper place（）the sling is made up is the square of the hatch.
单项选择题 The port clearance for a ship should be granted（）the completion of loading or discharging in the port.
