Mr. Wang wants to go to the post ____. It's not far from his home. He walks ____Winter Street. He turns ____at Spring Street. Then he walks straight. It's over there. It's ____the flower shop and the ____.
如图所示的实例中，属于减小压强的是（ ）
下列与能量有关的说法正确的是（ ）
下列叙述中哪一项是错误的（ ）
