[填空题] 一个国家、一个省或者一个地区，它形成在一定的国土面积之内，应有（）几个基本的空间。

地下连续墙有哪些用途？ 道路绿化设计的总原则错误的是（） ["以乔木为主，乔、灌、草相结合","保证不转移司机视线","植物配置应与市政设施相协调","近期效果与长期效果相结合"] 一般大中型汽车修理企业为了降低修理成本，常用（）来清除油污。 ["碱溶液","汽油","柴油","丙酮"] 地下连续墙导墙的作用是什么？ A technician is troubleshooting a host connectivity problem. The host is unable to ping a server connected to Switch_A. Based on the results of the testing, what could be the problem（）。 ["A remote physical layer problem exists.","The host NIC is not functioning.","TCP\/IP has not been correctly installed on the host.","A local physical layer problem exists."] 一个国家、一个省或者一个地区，它形成在一定的国土面积之内，应有（）几个基本的空间。