单项选择题
A.to provide for safe practices in ship operation and a safe working environment
B.to establish safeguards against all identified risks
C.to continuously improve safety management skills of personnel ashore and aboard ships，including preparing for emergencies related both to safety and environmental protection
D.to avoid damage to the environment，in particular，to the marine environment，and to property
单项选择题 Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）
单项选择题 Where would you find the “call sign” or “call letters”of the radio station on your rig?（）
单项选择题 Where would you find a list of the lifesaving equipment onboard your supply boat? （）