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844. The cabin crew have used up all the portable extinguishers.
844. 机组人员已用完所有便携式灭火器。
Chief officer: sure , portable extinguishers have been ready on the spot, have emergency shutdown been tested and signaling has been agreed on?
当然，现场用的便携式灭火器已经备好，应急关断是否测试，关断信号是否已经商量完毕？
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