单项选择题
A.Replace the batteries
B.Check the sampling tube for blockage
C.Adjust the final reading by the amount the needle is displaced from zero
D.Replace the platinum filament
单项选择题 If dangerous goods have been thrown overboard by the Shipowner or the master，（）can be made liable for their loss.
单项选择题 I am（）fire and have dangerous cargo on board.
单项选择题 Goods may be dangerous not merely by reason of the fact that they may endanger the safety of the vessel，but also because they are liable to cause the vessel to be（）.