摄影中减小运动模糊的叙述,错误的是()
A.被照体固定
B.选择适当的呼吸方法
C.缩短曝光时间
D.缩短焦-片距
E.肢体应靠近胶片
参考答案:D
函数y=sin(2x2+x)导数是 [ ]
A.cos(2x2+x)
B.2xsin(2x2+x)
C.(4x+1)cos(2x2+x)
D.4cos(2x2+x)
—Does coffee really work when you have to work late into night?
—Yes.As far as I'm concerned, I feel very________after a coffee.[ ]
A. energetic
B. normal
C. adequate
D. sensitive