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For example , because the working fluid is not constantly renewed ( as occurs with a jet engine operating in the atmosphere ) oil leakage from bearing compartments cannot be tolerated , since oil borne in gas path flow will quickly foul critical heat exchange surfaces ( for example , the pebbles mentioned above and the regenerator ) , degrading engine performance . If , in fact , a tire that is going to be replaced by Ford is going to be replaced with a tire that has a much worse claims record than a tire being replaced , is that information significant enough for Ford perhaps to make a different decision or for consumers to make a different decision ? And an interesting little about that is that you may be familiar with a phenomenon called a solar eclipse . Anyone with a clothespin left at the end of the time receives a peso for oral participation . Is it possible to make do with a navy based on a core of submarines that operate as part of the long-range strategic arm of the military , next to coast guard vessels that engage in maritime security ?