blackjack strategy cards

there is no special strategy to play your hand when the dealer shows an ace in blackjack?
O depends entirely on the cards you hold?
I think it depends on what cards you expect if you have something halfway decent, you should probably stay. I try my hand just right and not guess what the dealer can be a Selection sort your poison situation. Here's a site with some great information strategy http://beatcasinoblackjack.com
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