干管定线时其延伸方向应和二级泵站输水到水池、水塔、大用户的水流方向一致,以最近的距离,将一条或几条干管平行地布置在用水量较大的街区。平行的干管间距约为()m。
A. 100~300
B. 300~500
C. 500~800
D. 800~1000
查看答案
α—淀粉酶和β—淀粉酶分别为和()。
A. 内切酶,外切酶
B. 外切酶,内切酶
C. 内切酶,内切酶
D. 外切酶,外切酶
A two-node cluster is configured for mutual takeover with two service IP labels. The cluster is Being tested for fallover behavior. Both nodes in the cluster have two network interfaces (ent0’ and ’ent1’) configured with IPAT via IP Replacement. When the network cable is removed from the interface card with the service address (’ent0’), the service address is moved to ’ent1’, and ’ent0’ is reconfigured on its boot address. When the network cable is replaced on ’ent0,the service address does not switch back to ’ent0’. What statement most accurately describes this situation?()
A. EtherChannel is needed to automatically switch the service IP address back to ’ent0’.
B. This is the default behavior for a network interface failure with this configuration.
C. Gratuitous ARP support needs to be enabled for the IP Network Interface Module in SMI
D. The Inactive Network Takeover option should be set to "true" to forece the service address back to ’ent0’.