IS - IS is often considered an alternative to OSPF in the IP world. Which two statements identify similarities between IS -IS and OSPF?()
A. support for designated intermediate systems and backup designated intermediate systems
B. support for multip le areas per router
C. support for classless routing
D. support for address summarization between areas
E. support for both DIS adjacencies and neighbor adjacencie
查看答案
用作排出上层建筑及半舱船货舱区内的水至舷外的排水孔,如孔口位置位于干舷甲板以下时,由开孔下缘至满载水线之间的距离可以为()。
A. 80mm
B. 100mm
C. 120mm
D. 150mm
A市政公司中标了地铁车站和区间隧道工程标段,将双线盾构施工分包给了具有专业资质的B公司,以满足建设方的工期要求。分包合同约定:工作井土建施工由A公司项目部负责,盾构吊运、安装均由B公司负责,A公司项目部配合。在吊装盾构机主体时,出现地面沉陷致使汽车吊向井壁外侧倾翻;侥幸的是无人伤亡。但是盾构机外壳有些撞伤,经鉴定可以修复并不影响施工;吊车侧部严重变形损坏,需进行大修。事故调查报告表明,现场硬化地面未进行承载力检验。 指出A市政公司分包工程存在的问题。