下列选项中不属于推动式供应链的不足之处的是（）A、分销商和零售商处于被动地位 B、需提

When you think of the Internet, you probably think of ".com." Just what do those three letters at the end of a World Wide Web address mean Every computer that hosts data on the Internet has a (71) numerical address. For example, the numerical address for the White House is 198.137.240.100. But since (72) people want to remember long strings of numbers, the (73) was developed. It is a critical part of the Internet’s technical infrastructure, correlates a numerical address to a word. To (74) the White House website, you could type its numerical address into the address box of your web browser. But most people prefer to use "www.whitehouse.gov." In this case，the domain name is (75) .

（73）处填（）。

A．DHCP

B．DNS

C．RIP

D．WINS

在酸性溶液中，用KMnO₄溶液滴定草酸盐时，滴定速度应该（）。

A．滴定开始时速度要快

B．开始时快，以后逐渐缓慢

C．开始时缓慢进行，以后逐渐加快

D．始终缓慢进行

建立环境规划指标体系的原则有（）。

A.选择性原则

B.可行性原则

C.规范性原则

D.科学性原则

自由组合定律

在工程网络计划中，下列关于关键线路的说法错误的是（）。

A.双代号网络计划中总持续时间最长

B.相邻的两项工作之间时间间隔均为零

C.单代号网络计划中由关键工作组成

D.时标网络计划中自始至终无波形线