单项选择题 On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.

单项选择题 Oceangoing dry bulk cargo vessels over 1000 GT must have approved combination-type fire nozzles at all（）.

单项选择题 Most very large ocean going vessels，such as bulk carriers and large tankers，tend to squat（）.