阅读下面的文言文，回答17——23题。 （一）得道多助，失道寡助 天时不如地利，

在工程网络计划中，关键线路上（）。

A.相邻两项工作之间的时间间隔全部为零

B.工作的持续时间总和即为计算工期

C.工作的总时差等于计划工期与计算工期之差

D.相邻两项工作之间的时距全部为零

E.节点的最早时间等于最迟时间

一个正方体的六个面上分别写上数字1～6．掷一次，可能出现______种结果，分别是______．

A．

B．

C．

People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒)party，say, that the are “in computers，”or“ in telecommunications，”or “in electronic funds transfer”. The implication is that they are part of the high-tech world. Just between us，they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are （71）of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working group（紧密联系在一起的工作小组），we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort，and our failures stem from poor human interactions.

The main reason we tend to focus on the（72）rather than the human side of work is not because it’s more (73)，but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figurine out why Horace is in a blue funk(恐惧）or why Susan is dissatisfied with the company aver only a few months. Human interactions are complicated and never very crisp（干脆的，干净利落的）and clean in　their effects, but they matter more than any other aspect of the work. If you find yourself concentrating on the（74）rather than the（75）．you’re like the vaudeville character （杂耍人物）who loses his Keys on a dark street and looks for them on the adjacent street because，as he explains，“The light is better there!”

（73）处填（）。

A．trivial　　

B．crucial　

C．minor　

D．insignificant

聚乙烯燃气管道可敷设于（）为止，长期安全的使用。

A.车行道路下

B.建筑物下穿越

C.与其他管道同沟敷设

D.木材堆放场