题目内容

对铁路、道路两用桥定期检查维护铁路部门有何义务？

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Your company has an Active Directory domain. The main office has a DNS server named DNS1 that is configured with Active Directory-integrated DNS. The branch office has a DNS server named DNS2 that contains a secondary copy of the zone from DNS1. The two offices are connected with an unreliable WAN link. You add a new server to the main office. Five minutes after adding the server， a user from the branch office reports that he is unable to connect to the new server. You need to ensure that the user is able to connect to the new server. What should you do（）

A. Clear the cache on DNS2.
B. Reload the zone on DNS1.
C. Refresh the zone on DNS2.
D. Export the zone from DNS1 and import the zone to DNS2.

A/D转换过程四个步骤的顺序是（）。

A. 编码、量化、保持、采样
B. 采样、编码、量化、保持
C. 采样、保持、量化、编码

信用卡卡面包含的元素有哪些（）。

A. 信用卡卡号
B. 有效期
C. 姓名拼音
D. 银联标志及激光防伪标
E. 卡片磁条：记载持卡人信息的载体；
F. 个人签名栏
G. 卡号后四位及卡片校验码

网约车行驶里程达到60万千米时强制报废。行驶里程未达到60万千米但使用年限达到8年时，退出网约车经营。

A. 正确
B. 错误