【简答题】
查看正确答案A、∆H<sub>3sub>=∆H<sub>1sub>+∆H<sub>2sub> B、∆H<sub>3sub>=∆H<sub>1sub>-∆H<sub>2sub> C、∆H<sub>3sub>=∆H<sub>2sub>-∆H<sub>1sub> D、∆H<sub>3sub>=2∆H<sub>1sub>-∆H<sub>2sub>
搜题
更多“已知ΣH<sub>2</sub>＝60.447m<sup>3</sup>，炉顶煤气中：H<sub>2</sub>＝0.021，CO<sub>2</sub>＝0.19，CO＝0.228，CO<sub>2</sub>煤气+CO煤气＝714m<sup>3</sup>。求氢利用率ηH。”相关的问题
第3题
A、H<sub>1sub>、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub> B、H<sub>1sub>、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub>A C、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub>、H<sub>4sub> D、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub>A、H<sub>4sub>
第5题
A、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> B、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>、C<sub>2sub>H<sub>2sub> C、CH<sub>4sub>、C<sub>2sub>H<sub>2sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> D、CO、CO<sub>2sub>、H<sub>2sub>、CH<sub>4sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>
,试求该点的应变分量ε<sub>xsub>，ε<sub>ysub>，γ<sub>xysub>。 第7题
A、h<sub>01sub>>h<sub>02sub> B、h<sub>01sub><h<sub>02sub> C、h<sub>01sub>=h<sub>02sub> D、h<sub>01sub>≤h0<sub>02sub>
第8题
A、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)<sub>2sub>]Cl<sub>3sub> B、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)<sub>2sub>Cl]Cl<sub>2sub> C、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)CL]Cl<sub>2sub>·H<sub>2sub>O D、[Cr(NH<sub>3sub>)<sub>4sub>Cl<sub>2sub>]Cl·2H<sub>2sub>O
第9题
A、H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub>→CO B、H<sub>2sub>→CO→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub> C、H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→CO→C<sub>2sub>H<sub>2sub> D、CO→H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub>
第10题
A、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub> B、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> C、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub>
