搜题请搜索小程序“爱下问搜题”
问题 单项选择题

某工程双代号时标网络计划如下图所示，如果B．D．I三项工作共用一台施工机械且必须顺序施工，则总工期（）。

A．会延长2周，但施工机械在现场不会闲置

B．会延长2周，且施工机械会在现场闲置6周

C．不会延长，且施工机械在现场也不会闲置

D．不会延长，但施工机械会在现场闲置2周

答案

参考答案：C

单项选择题

Currently 94%of Web users use either Internet Explorer or Firefox．but recently somenew (71) have been developed that are beginning to attract attention．The browser Opera isbecoming very (72) because of its speed，it is currently the world’S fastest browsec andbecause it is much smaller (73) existing browsers(it can almost fit on a single diskette)．It canalso (74) the last web page you visited，so the next time you surf,you can start where you leftoff．And like the big two，you can get it for free；the catch is that you have to watch blinkingads in one comeL orpay$40 forthe ad—free (75) ofOpera．

A．version
B．revision
C．software D book
查看答案
单项选择题

危机事件分级的意义在于（）。

A.好区别

B.好传达

C.为危机管理所需动员的资源和能力提供指导

D.国家规定
查看答案