1979年诺贝尔经济学奖得主舒尔茨认为（） ["A、农村劳动力流出，不会低于农村生产力 ","B、从事传统农业劳动的农民对市场价格变化的反应不会敏感 ","C、尽管传统农业技术领域落后，农民贫穷，但资源配置很有效率 ","D、通过对农村剩余劳动力进行人力资本投资，促使他们尽快转移城市"]
Click the Exhibit button. Given the information shown in the exhibit, when creating 2 DS1 circuits, how many STS ports are used on the VT1.5 matrix at Node 1 as VT circuits and how many are used after using VT tunnels?（） ["2；0","3；2","3；5","4；0","6；0","6；2"]
下列养护工程项目属于大修工程的是（）。 ["A.大桥支座、伸缩缝的修理更换 ","B.拆除、重建或新增较大挡土墙、护坡等防护工程 ","C.大塌方的清楚及善后处理 ","D.沥青路面整段封层罩面"]
You are installing a Cisco ONS 15454 SDH in a service provider site. An E3 cable is being connected to a digital cross-connect system. What is the maximum distance allowed between the two？（） [" 225 ft"," 450 ft"," 655 ft"," 900 ft"]
要分离阶段包括哪几个阶段？
对于一个线性表来说，如果它的表长为0，则我们称它为（）表。
