-dfrac (2)(3) C. dfrac (2)(3) D. dfrac (1)(9)
dfrac (3)(2)RC dfrac (7)(2)R D. dfrac (3)(2)RT对于双原子气体的摩尔定压热容的表达式为()
dfrac {3)(10) C. dfrac (7)(10) D. dfrac (2)(5)
dfrac (3)(2) D. dfrac (1)(2)
((y+dfrac {1)(2))}^2=dfrac (3)(4) D. ((y-dfrac {1)(2))}^2=dfrac (3)(4)
[ 0,dfrac (pi )(2)] D. [ -sqrt (dfrac {pi )(2)},0]
dfrac (1)(x) C. -dfrac (1)({x)^2} D. dfrac (2)({x)^3}
B. dfrac {1)(2) . C. dfrac (2)(3) . D. dfrac (3)(4)
dfrac (1)(5)(X)_(1)+dfrac (2)(5)(X)_(2)+dfrac (2)(5)(X)_(3)-|||-D .dfrac (1)(7)(
dfrac (pi )(4) C. dfrac (pi )(2) D.π