对于反应A2 + 3B2
2C来说，以下化学反应速率的表示中，反应速率最快的是（ ）
A．v(B2) ="0.8mol/(L•s) " B．v(A2)
=0.4mol/(L•s)
C．v(C) ="0.6mol/(L•s)" D．v(B2) =4.2mol/(L•min)
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