What navy fuels are used as primary and backup?

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Multiple Choice

What navy fuels are used as primary and backup?

Explanation:
The main idea is that Navy fuel for ship propulsion and aircraft uses two distinct fuels, with a safe, compatible backup in place. F-76 is the standard shipboard distillate fuel used to power propulsion gas turbines and other aboard-ship engines. JP-5 is the high flash point aviation fuel kept on board as a backup to ensure aircraft operations can continue if the primary ship fuel isn’t available, and because it’s safer to handle on deck and through the ship’s fueling system. So the best pairing is F-76 as the primary and JP-5 as the backup.

The main idea is that Navy fuel for ship propulsion and aircraft uses two distinct fuels, with a safe, compatible backup in place. F-76 is the standard shipboard distillate fuel used to power propulsion gas turbines and other aboard-ship engines. JP-5 is the high flash point aviation fuel kept on board as a backup to ensure aircraft operations can continue if the primary ship fuel isn’t available, and because it’s safer to handle on deck and through the ship’s fueling system. So the best pairing is F-76 as the primary and JP-5 as the backup.

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