搜题请搜索小程序“爱下问搜题”
问题 单项选择题

工期优化一般通过压缩( )持续时间来进行。

A．工期最长的工作

B．总时差为零的工作

C．自由时差为零的工作

D．非关键线路上的工作

答案

参考答案：B

解析：[解题要点] P 156～P 158进度计划的优化。

单项选择题

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) .

（74）处填（）。

A．touch

B．access

C．deny

D．illustrate
查看答案
单项选择题

在主要运输大巷人力推车运送钢轨时，在钢轨车前（）米以外必须有人探路，后面有人持红灯警戒。

A.50

B.40

C.30
查看答案