某电场的电场线分布如图所示,电场中A、B两点在图示位置,则A、B两点相比较( )
A:A点的场强大
B:B点的场强大
C:B点的电势高
D:正电荷在B点的电势能高
①PbO+C △_ Pb+CO (主要)
②PbO+CO △_ Pb+CO2
③〔Cu (NH3)2〕Ac+CO+NH3 △_ 〔Cu (NH3)3〕Ac•CO;△H<0(Ac﹣代表醋酸根离子此反应无明显现象)
试根据图回答问题:
下列过程中汲及化学变化的是( )
—Many people eat _______ meat and _______ vegetables than they did before.
—Yes, that's why they're getting fatter and fatter.