单项选择题 Sometimes the charter-party states that the amount of cargo to be loaded is to be decided by the shipowners，e.g. 10000 tons of 2240 1b.，12％ more or less at（）option.

单项选择题 Sometimes charter-party expressly prohibit the loading of dangerous goods，but sometimes a Charterer is entitled by an express term to load them provided that due notice is given （）.

单项选择题 Should it appear that war or blockade would prevent the vessel from safely reaching the port of destination and / or discharging the goods thereat，the Carrier（）.