活期利息计提和结息业务目前开办币种有：人民币、（）、美元三种。
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同一条等高线上的各点,其高程都相等。
A. 正确
B. 错误
标准键盘上，数字锁定键在数字的左上方。
A. 正确
B. 错误
The DAI feature has been implemented in the Company switched LAN. Which three statements are true about the dynamic ARP inspection （DAI） feature？ （）
A. DAI can be performed on ingress ports only.
B. DAI can be performed on both ingress and egress ports.
C. DAI is supported on access ports， trunk ports， EtherChannel ports， and private VLAN ports.
DAI should be enabled on the root switch for particular VLANs only in order to secure the ARP caches of hosts in the domain.
E. DAI should be configured on all access switch ports as untrusted and on all switch ports connected to other switches as trusted.
F. DAI is supported on access and trunk ports only.
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