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What should be used to melt the ice in a turbine engine if the compressor is immobile because of ice?
Low temperature antifreeze
High pressure water
Chemical deicer
Hot air
The correct answer is: Hot air
Hot air should be used to melt the ice in a turbine engine if the compressor is immobile because of ice. This is because hot air can be directed to the affected area and can quickly melt any ice buildup. Using low temperature antifreeze, while effective in preventing ice buildup, would not help in melting existing ice. High pressure water could potentially damage the engine and is not recommended. Chemical deicer can also be effective in preventing ice buildup but may not be as effective in melting existing ice. Therefore, hot air is the most appropriate and safe solution in this scenario.