单项选择题 The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.

单项选择题 The canvas covering of fire hose is called the（）.

单项选择题 The brickwork surrounding the firebox of a boiler is known as（）.