A.{2} | B.{1,2,3} | C.{1,3} | D.{0,1,2,3,4} |
A.{2} | B.{1,2,3} | C.{1,3} | D.{0,1,2,3,4} |
A.(1,-1) | B. | C. | D.{1,-1} |
A.(1,-1) | B. | C. | D.{1,-1} |
A.{0,1} | B.{-1,0,1} | C.{0,1,2} | D.{-1,0,1,2} |
A.{0,1} | B.{-1,0,1} | C.{0,1,2} | D.{-1,0,1,2} |
© 2017-2019 超级试练试题库,All Rights Reserved.