A、k<sub>1sub>[A]-k<sub>2sub>[D][B] B、k<sub>1sub>[A]-k<sub>-1sub>[B]-k<sub>2sub>[D][B] C、k<sub>1sub>[A]-k<sub>-1sub>[B]+k<sub>2sub>[D][B] D、-k<sub>1sub>[A]+k<sub>-1sub>[B]+k<sub>2sub>[D][B]
A、k<sub>1sub>[A]-k<sub>2sub>[D][B] B、k<sub>1sub>[A]-k<sub>-1sub>[B]-k<sub>2sub>[D][B] C、k<sub>1sub>[A]-k<sub>-1sub>[B]+k<sub>2sub>[D][B] D、-k<sub>1sub>[A]+k<sub>-1sub>[B]+k<sub>2sub>[D][B]
A、K<sub>1sub>+K<sub>2sub> B、K<sub>1sub>-K<sub>2sub> C、K<sub>1sub>·K<sub>2sub> D、K<sub>1sub>/K<sub>2sub>
A、K<sub>1sub>+K<sub>2sub> B、K<sub>1sub>-K<sub>2sub> C、K<sub>1sub>·K<sub>2sub> D、K<sub>1sub>/K<sub>2sub>
A、Kθ<sub>1sub>+ 3Kθ<sub>2sub>-Kθ<sub>3sub> B、Kθ<sub>1sub>Kθ<sub>2sub>Kθ<sub>3sub> C、Kθ<sub>1sub>Kθ<sub>2sub>/Kθ<sub>3sub> D、Kθ<sub>1sub>Kθ3<sub>2sub>/Kθ<sub>3sub>
A、已知下列两个反应的指前因子相同,活化能不同,且E<sub>a,1sub>〉E<sub>a,2sub><br /> <br /> 当反应温度升高时,k<sub>1sub>()k<sub>2sub>(填“大于”、“小于”或“等于”),k<sub>1sub>/k<sub>2sub>()(填“增大”、“减小”或“不变”)。
A、E<sub>1sub>=E<sub>2sub>;K<sub>1sub>=K<sub>2sub> B、E<sub>1sub>≠E<sub>2sub>;K<sub>1sub>=K<sub>2sub> C、E<sub>1sub>=E<sub>2sub>;K<sub>1sub>≠K<sub>2sub> D、E<sub>1sub>≠E<sub>2sub>;K<sub>1sub>≠K<sub>2sub>
A、KØ<sub>1sub>/ KØ<sub>2sub> B、KØ<sub>2sub>/KØ<sub>1sub> C、KØ<sub>1sub>· KØ<sub>2sub> D、KØ<sub>1sub>- KØ<sub>2sub>
A、K1257;<sub>1sub>=K1257;<sub>2sub> B、K1257;<sub>1sub>=2K1257;<sub>2sub> C、K1257;<sub>1sub>=1/2K1257;<sub>2sub> D、K1257;<sub>1sub>=(K1257;<sub>2sub>)2
A、已知R<sub>1sub>=10KΩ,R<sub>2sub>=66KΩ,C=10uF。<br /> (1)判断555定时器组成的是何种电路?<br /> (2)试画出Uo的波形。<br />
A、Kθ<sub>asub>+Kθ<sub>wsub> B、Kθ<sub>wsub>-Kθ<sub>asub> C、Kθ<sub>wsub>/Kθ<sub>asub> D、Kθ<sub>wsub>·Kθ<sub>asub>