单项选择题 The two courses of action if the underwater hull of a ship is severely damaged are to plug the openings and to（）.

单项选择题 The stability which remains after a compartment is flooded is called（）.

单项选择题 The shipper is deemed to have guaranteed the accuracy at the time of shipment of the quantity and weight as furnished by him，and must indemnify（）against all losses，damages and expenses arising from the inaccuracies in such particulars。