ODE uses whatever units you want, as long as they are consistent (it applies no conversion constants internally).
Most people feel most comfortable using kilos, seconds, meters, but you can use whatever consistent set of units you want.
Sincerely,
jw
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Americans might object: there is no way we would sacrifice our living standards for the benefit of people in the rest of the world. Nevertheless, whether we get there willingly or not, we shall soon have lower consumption rates, because our present rates are unsustainable.