单项选择题 If the Shipowner has agreed to receive deck cargo，（）must contribute to the loss，provided the owner of the jettisoned goods is the sole cargo owner.

单项选择题 If the Shipowner can only show that some part of the damage to the goods was due to a cause within the exception，he must also show how much of the damage is comprised in that part，otherwise he is liable（）.

单项选择题 If the ship is disabled by excepted perils while completing a voyage on which she was（）at the time of chartering，the Shipowner will not be excused.