竣工测量资料的主要用途是：验收与评价工程是否按图施工的依据；是工程交付使用后，进行管理、维修的依据；是工程改建、扩建的依据。
参考答案：对
He has ______ daughter______ Mary. [ ]
A. a eight years old, name
B. an eight-years-old, named
C. an eight-year-old, named
D. a eight-year-old, naming
等腰三角形有两条边长为4cm和9cm，则该三角形的周长是（ ）
A．17cm
B．22cm
C．17cm或22cm
D．18cm
