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The difference between Pahoehoe lava and AA lava is that pahoehoe lava is smooth and AA lava is jagged.
An AA is only 2 years of college while a BA/BS is an additional 2 years for a total of 4 years. The AA is often earned in a community college while the BA is a university degree.
just because it is different
The standard difference in widths is 1/8" . Therefore the difference between a AA and a medium (B) would be would 1/4".
BB is a row behind AA.
its what u think it is
AA is not rational.
aa
You would list them AA/AS BA/BS
Size is the difference - both supply 1.5 volts
Fs (frontside) is your facing the direction your moving while doing the slide, Bs (backside) is the opposite.
ANSI valves are based on American National Standards Institute Standards. For example, ANSI 16.34 refer to steel valves. BS valves are based on British Standards. For example, BS1212 refer to ball valves excluding floats.