单项选择题 If any cargo is damaged，the insurance company usually pays to the cargo owner a sum of money equal to the value of（）.

单项选择题 If a port is in fact unsafe，it（）irrelevant that well-informed men might have erroneously pronounced it to be safe.

单项选择题 If a davit-launched liferaft aboard a ship cannot be launched because of damage to the davit，you should（）.