What additional precautions should be taken when making temporary repairs to a ship that is operating when hydrogen sulfide is present?()
A. Seal off all tank and compartment ventilation
B. Remove all bulk materials from the P-tanks
C. Provide respiratory protection and monitoring
D. All of the above
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电子商务解决了信息流、商流与资金流处理上的繁琐对现代化的物流过程的延缓,进一步加快现代化的物流速度。
A. 正确
B. 错误
勤务步骤在AMM哪个页区?
A. 301-399
B. 401-499
C. 501-599
D. 601-699
袋装化肥的堆垛方式一般包括()
A. 五花垛
B. 六花垛
C. 七花垛
D. 八花垛
小队长和中队,大队委员会都由队员选举产生。半年或一年选举一次
A. 正确
B. 错误