某种气体分子在温度T<sub>1</sub>时的方均根速率等于温度T<sub>2</sub>时的平均速率,求T<sub>2</sub>/T<sub>1</sub>。
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A、△G=[V<sub>lsub>(1-C<sub>lsub>)P<sub>lsub>/T<sub>lsub>-V<sub>2sub>(1-C<sub>2sub>)P<sub>2sub>/T<sub>2sub>][C/(1-C)]M/R B、△G=[V<sub>lsub>(1-C<sub>lsub>)P<sub>lsub>/T<sub>lsub>-V<sub>2sub>(1-C<sub>2sub>)P<sub>2sub>/T<sub>2sub>]M/R C、△G=[V<sub>lsub>C<sub>lsub>P<sub>lsub>/T<sub>lsub>-V<sub>2sub>C<sub>2sub>P<sub>2sub>/T<sub>2sub>][C/(1-C)]M/R D、△G=[C/(1-C)]M/R[V<sub>lsub>P<sub>lsub>/T<sub>lsub>-V<sub>2sub>P<sub>2sub>/T<sub>2sub>]
A、P<sub>1sub>V<sub>1sub>=P<sub>2sub>V<sub>2sub> B、PV/T=常数 C、PT/V=常数 D、P<sub>1sub>/T<sub>1sub>=P<sub>2sub>/T<sub>2sub>
A、{T<sub>(1)sub>≥t<sub>0sub>} B、{T<sub>(2)sub>≥t<sub>0sub>} C、{T<sub>(3)sub>≥t<sub>0sub>} D、{T<sub>(4)sub>≥t<sub>0sub>}
A、两流体温度差(T-t) B、冷流体进、出口温度差(t<sub>2sub>-t<sub>1sub>) C、热流体进、出口温度差(T<sub>2sub>-T<sub>1sub>) D、液体温度和管壁温度差(T-T<sub>Wsub>)或(t<sub>wsub>-t)