A.對(duì)正秩次有0.5和1,對(duì)負(fù)秩次有-0.5和-1 B.對(duì)正秩次有2,對(duì)負(fù)秩次有-2 C.對(duì)正秩次有3,對(duì)負(fù)秩次有-3 D.0不考慮