单项选择题
The telegram AFTER UNLOADING PROCEED MANILA IN BALLAST indicates that the ship will proceed to Manila（）.
A.with dangerous cargo B.for discharging C.with no cargo on board D.for taking ballast
单项选择题 The sign used to caution persons approaching the gangway of a tank barge during cargo transfer reads（）.
单项选择题 The shipper must（）in a suitable manner dangerous goods as dangerous.
单项选择题 The nozzle of a gasoline hose or can should be kept（）.
