或. =5, ,b=-5 --|||-B (B) =5, b=5 --|||-C .(C) =dfrac (1)(5) =-dfrac (1)(5) --|||-D (D ). =-dfrac (1)(5) =dfrac (1)(5) H

(B) dfrac (5)(12). (C) dfrac (4)(5). (D) dfrac (5)(6).

A dfrac (4)(5);B dfrac (4)(5);C dfrac (4)(5);D dfrac (4)(5).某学生依次进行三门课程的考试,第一门课程

(B) dfrac (7)(8) . (C) dfrac (5)(8) . (D) dfrac (1)(8)

已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)

已知 (A)=dfrac (1)(2) , (B)=dfrac (1)(3) , (C)=dfrac (1)(5)-|||-, (AB)=dfrac (1)(1

已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)

极限 lim _-|||-A-|||-dfrac (5)(3)-|||-B dfrac (7)(3)-|||-C) 1-|||-D 3

A . 0 B . =-dfrac (1-5i)(2+3i) C . =-dfrac (1-5i)(2+3i)D . =-dfrac (1-5i)(2+3i)设

int ((2x-5))^5dx=-|||-A dfrac (1)(8)((2x-5))^4+C-|||-B dfrac (1)(12)((2x-5))^4+C

,,UNDUNDUND上的可能是-|||-()-|||-A.dfrac (1)(10)-|||-B.dfrac (1)(5)-|||-C.dfrac (1)(3