单项选择题
A.定类测量B.定序测量C.定距测量D.定比测量
A.(3)(4)(2)(1)(5)(6)B.(2)(1)(4)(3)(5)(6)C.(4)(3)(2)(1)(5)(6)D.(2)(1)(3)(4)(5)(6)
A.0个B.1个C.2个D.3个