dfrac (12)(5)-|||-C. dfrac (5)(2)-|||-D.3

dfrac {3)(10) C. dfrac (7)(10) D. dfrac (2)(5)

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

-dfrac (2)(3) C. dfrac (2)(3) D. dfrac (1)(9)

dfrac (3)(7) C. dfrac (3)(4) D dfrac (3)(5)-|||-所选酱率:A-|||-课由陈述

dfrac (1)(2)pi .-|||-C.π-|||-D. dfrac (5)(4)pi .-|||-0

B. dfrac {1)(2) . C. dfrac (2)(3) . D. dfrac (3)(4)

dfrac (1)(6)-|||-C. dfrac (1)(2) D. dfrac (1)(3)

dfrac (1)(6)-|||-C. dfrac (1)(2) D. dfrac (1)(3)

dfrac (1)(5)(X)_(1)+dfrac (2)(5)(X)_(2)+dfrac (2)(5)(X)_(3)-|||-D .dfrac (1)(7)(

dfrac (1)(x) C. -dfrac (1)({x)^2} D. dfrac (2)({x)^3}