单位工程竣工验收应由（）组织。 ["施工单位","监理单位","建设单位","设计单位"]
Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?（） ["Optical network","Network management","Storage-area network (SAN)","Content delivery network (CDN)"]
路基土压实操作中，土的含水量达到（）时，压实效果最好。 ["液性界限","最佳含水量","饱和含水量","塑性界限"]
堰的水流运动特征为（）。 ["共同的水力特征为上游水位壅高过堰时水面跌落","共同的水力特征为下游水位壅高过堰时水面跌落","共同的水力特征为上游水位壅高过堰时水面发生水击","共同的水力特征为下游水位壅高过堰时水面发生水击"]
回游
简述钻爆洞挖掘进的施工过程。
