A company has recently switched ISPs and is being assigned a new block of public addresses. The public web and FTP servers must be re-addressed to support this change. After changing IPaddresses and updating the DNS records many customers have reported that they are not able toaccess the web or FTP servers. Which of the following could have been done prior to makingthese changes to make it more transparent to users？（）
A. Reduce the TTL on the DHCP records.
B. Configure a primary DNS server for the PTR records.
C. Reduce the TTL on the DNS records.
D. Configure a caching only DNS server.
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关于货物运输，下列说法正确的是（）。
A. 是商品生产在流通领域内的继续，是生产性的劳动
B. 改变了劳动对象的属性或形态
C. 生产和运输消费在时间和空间上是同一过程
D. 参与社会产品的生产和国民收入的创造
E. 衔接生产、分配、交换、消费的四个环节
下列储存商品中，容易发生裂解的是（）。
A. 漂白粉
B. 桐油
C. 橡胶
D. 塑料
A disk drive failed in a RAID 5 array. After replacing the disk drive， users are still reporting thataccess to the server is very slow. Which of the following BEST explains the problem？（）
A. The array is rebuilding.
B. The array must be reconfigured.
C. The array is corrupt.
D. The disk drive is not compatible.
关于货流在时间上的不均衡性的表述正确的是（）。
A. 表现在货流季节的不均衡性
B. 表现在运输方式的季节性
C. 反映物流在不同时间上的差异，包括年度和季度差异
D. 表现在货流方向的不均衡
E. 通过合理布局仓库可以缓和物流季节的波动
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