工程施工测量贯穿于施工各个阶段，包括（）
A.场地平整
B.土方开挖
C.塔吊安装
D.施工设备进场
参考答案：A, B
Who's that pretty woman?[ ]
A. He's my father.
B. She's my mother.
C. He's my grandmother.
动脉瓣是（ ）
A．心房和心室之间的瓣膜
B．动脉内的瓣膜
C．动脉和静脉之间的瓣膜
D．心室和动脉之间的瓣膜
