单选题下列关于SVI描述，正确的是（）ASVI是混合液在量筒中静置30min后形成沉淀的污泥容积占原混合液容积的百分率BSVI值能够反映活性污泥的凝聚性、沉降性能，此值以介于70~100之间为宜CSVI较低，说明活性污泥的活性较低DSVI较高，说明二沉池的污泥沉降性能较好
单选题
下列关于SVI描述，正确的是（）
A
SVI是混合液在量筒中静置30min后形成沉淀的污泥容积占原混合液容积的百分率
B
SVI值能够反映活性污泥的凝聚性、沉降性能，此值以介于70~100之间为宜
C
SVI较低，说明活性污泥的活性较低
D
SVI较高，说明二沉池的污泥沉降性能较好
参考解析
解析：
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相关考题：
An SVI has been configured on a device. Which two statements are true about a switched virtualinterface （SVI）？（）A、An SVI is normally created for the default VLAN （VLAN1） to permit remote switchadministrationB、Multiple SVIs can be associated with a VLANC、SVI is another name for a routed portD、An SVI is created by entering the no switchport command in interface configuration modeE、An SVI provides a default gateway for a VLAN
An SVI has been configured on a device. Which two statements are true about a switched virtual interface （SVI）？（）A、An SVI is normally created for the default VLAN （VLAN1） to permit remote switch administration.B、Multiple SVIs can be associated with a VLAN.C、SVI is another name for a routed port.D、An SVI is created by entering the no switchport command in interface configuration mode. E、An SVI provides a default gateway for a VLAN.
有两个曝气池，现用SVI，SV%对其进行比较，下列说法哪条最合理（）。A、SV%大，SVI小的曝气池，污泥沉降性能好，MLSS大。B、SV%大，SVI小的曝气池，污泥沉降性能差，MLSS小。C、SV%小，SVI大的曝气池，污泥沉降性能好，MLSS小。D、SV%小，SVI大的曝气池，污泥沉降性能差，MLSS大。
多选题An SVI has been configured on a device. Which two statements are true about a switched virtual interface （SVI）？（）AAn SVI is normally created for the default VLAN （VLAN1） to permit remote switch administration.BMultiple SVIs can be associated with a VLAN.CSVI is another name for a routed port.DAn SVI is created by entering the no switchport command in interface configuration mode.EAn SVI provides a default gateway for a VLAN.
多选题An SVI has been configured on a device. Which two statements are true about a switched virtualinterface （SVI）？（）AAn SVI is normally created for the default VLAN （VLAN1） to permit remote switchadministrationBMultiple SVIs can be associated with a VLANCSVI is another name for a routed portDAn SVI is created by entering the no switchport command in interface configuration modeEAn SVI provides a default gateway for a VLAN
单选题关于污泥指数（SVI），正确的叙述是（）ASVI过低，活性污泥中有机物较多BSVI过高时，污泥细小紧密CSVI过低，活性污泥缺乏活性DSVI越小越好