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http://rds.yahoo.com/_ylt=A0geu5nuUWlHXTwAYWdXNyoA;_ylu=X3oDMTE4NWZ1dTA4BHNlYwNzcgRwb3MDMgRjb2xvA2FjMgR2dGlkA0Y3NTRfODkEbANXUzE-/SIG=12bvq8ici/EXP=1198170990/**http%3a//www.grc.nasa.gov/WWW/K-12/airplane/enthalpy.html

2007-12-19 04:17:16 · answer #1 · answered by glenn t 7 · 0 0

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