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销售区域也称区域市场或销售辖区

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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’.

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简述主控系统与变流系统间的接线,并描述其功能.

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During the project, requirements change for a variety of reasons. As needs change and as work proceeds, additional requirements are derived and changes may have to be made to the existing requirements. It is essential to manage these additions and changes efficiently and effectively. To effectively analyze the impact of the changes, it is necessary that the source of each requirement is known and the rationale for any change is documented. The project manager may, however, want to track appropriate measures of requirements volatility to judge whether new or revised（）are necessary.

A. proceedings
B. controls
C. forecastings
D. Prelibations

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