A.單一經(jīng)營(yíng)、一體化經(jīng)營(yíng)、多種經(jīng)營(yíng) B.多種經(jīng)營(yíng)、一體化經(jīng)營(yíng)、其它經(jīng)營(yíng) C.單一經(jīng)營(yíng)、多種經(jīng)營(yíng)、其它經(jīng)營(yíng)
A.5℃ B.10℃ C.15℃ D.20℃
A.50℃ B.60℃ C.70℃