A:①②
B:②③
C:②④
D:③④
—There are some apple pies on the table, you may take ______.
若∠1=40.4°,∠2=40°4′,则∠1与∠2的关系是( )
我国名酒五粮液素有“三杯下肚浑身爽,一滴沾唇满口香”的赞誉,曾经获得世博会两届金奖。有一种精品五粮液,它的包装盒上标明容量500mL,(ρ酒=0.9×103 kg/m3),则它所装酒的质量为____ kg,将酒倒出一半以后,剩余酒的密度为____ kg/m3;如果用此瓶装满水,则总质量比装满酒时多____ kg.