For flash photography, set the aperture at f.5.6.用闪光照相,要把光圈孔径定为5.6。The optimum aperture of an aerator is smallest at the water depth of 4 m.一般水深在4m左右,曝气器的最优孔径最小.Use a small aperture and position the camera carefully.用小光圈...
选拔过程是基于对能力和经验的严格测试。The selection process is based on rigorous tests of competence and experience.建立了“能本管理”的基本概念, 对能力 、 能力本位等基本概念作了必要的界定.It defines such basic concepts as capacity - oriented management, capacity, and capa...