大型运动设备(需解体)拆除时,施工单位应根据按()拆除解体情况,进行结构稳定性及吊装重量的精确核算,确保安全。
A. 设计方案或图纸
B. 原设计方案或图纸
C. 新设计方案或图纸
You create a mobile Web application. You need to use a Command control to post user input from the UI elements back to the server. What are two possible ways to achieve this goal?()
A. Place the Command control within an instance of the System.Web.UMobileControls.SelectionList control.
B. Place the Command control within an instance of the System.Web.UMobileControls.ObjectList control.
C. Place the Command control within an instance of the System.Web.UMobileControls.Form control.
D. Place the Command control within an instance of the System.Web.UMobileControls.Panel control.
立式横火管锅炉燃烧火焰直接辐射(),高温烟气经喉管进入第一组烟管,到前烟箱后折回到第二组烟管汇集到后烟箱,经烟囱排出。
A. 炉胆
B. 烟管
C. 横水管
D. 水冷壁
选用ARPA相对矢量可提供的信息有()
A. 评估目标逼近速度,对碰撞危险的目标能迅速作出评估
B. 目标的雷达态势角,可判断会遇情况
C. 目标的相对矢量指出了其速度的大小
D. 以上述都不对