下列投资项目中,流动性和变现性最差的是() ["股票投资","债券投资","银行储蓄","房地产投资"]
A mobility group is created by a Cisco WLCM and 4402 Series Wireless LAN Controller. A client that isanchored on the Cisco WLCM roams to an access point on the 4402 controller. You then run a debug command on the 4402 controller. Which message would best describe the establishment of the tunnel fromthe foreign controller’s perspective?() ["Transmit Mobile Anchor Export message","Received Mobile Anchor Export message","Transmit Plumbing duplex mobility tunnel message","Received Plumbing duplex mobility tunnel message"]
管道内检测器主要有基于超声波原理的检测器主要检测()。 ["管道壁厚","防腐层破损点大小的确定以及破损点的精确定位","防腐层绝缘电阻的检测","涂层本身没有破坏"]
施工定额组成内容是:()。 ["直接费定额","间接费定额","其他基本建设费用定额","劳动定额、材料消耗定额和施工机械台班使用定额组成"]
精神病产生的基础是()
简述拱坝应力分析中拱冠梁法的基本原理。