单项选择题
The term DISCHARGE，as it applies to the pollution regulations，means（）.
A.spilling B.leaking C.dumping D.All of the above
单项选择题 The ship is listing too much due to your faulty method in loading operation．You must keep her （）.
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.
