三级建筑物平面控制网的测角中误差为（）。
A．±15"
B．±18"
C．士20"
D．±25"
参考答案：D
The _____smell of success around her shows that she is a Dancing Queen on the stage.[ ]
A. sweet
B. tasty
C. final
D. great
工程项目管理组织一般分为四个层次，按从上到下顺序第三个层次是( )。
A．决策层B．操作层C．执行层D．协调层
smell of success around her shows that she is a Dancing Queen on the stage.[ ]