当飞行机组配备3名驾驶员，其中包含一名第二机长时，公司可计划排班的最大飞行时间为多久？
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Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT（）.
A. start the mechanical ventilation system for the engine room
B. operate the fuel shut-off for the engine room
C. operate all fire extinguishing equipment aboard the vessel on board the vessel，including starting the fire pump
D. All of the above
《江苏省爱国卫生条例》所指的爱国卫生工作是有哪些？
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