A.160°B.180°C.150°D.100°
A.反風(fēng)量B.壓力C.效率D.功率
A.都不要旋轉(zhuǎn)B.都要旋轉(zhuǎn)150°C.中導(dǎo)葉旋轉(zhuǎn)D.中導(dǎo)葉旋轉(zhuǎn)180°,后導(dǎo)葉旋轉(zhuǎn)160°