题目内容
900 句 T or F （23 words）457Since the aircraft can only be ventilated by ram air, the descent speed should not be greater than 600 feet per minute.[音频]
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900 句 T or F （23 words）518The pilot has activated the engine fire extinguisher, but the fire warning light is still on.[音频]
900 句 T or F （23 words）725As frontal weather was rapidly moving in from the west, the pilot requested a diversion to an alternate airport.[音频]
以下关于商业模式的描述不正确的是?
商业模式中分为9块,其中“渠道通路”是( )
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