The main purpose of the text is to _______.
A. describe children’s thinking
B.answer some questions children have
C.stress the importance of communication
D.advise parents to encourage their children
第1题:
可以直接用来求Ag2SO4的溶度积的电池是
A、Pt|H2(p)|H2SO4(a)|Ag2SO4(s)|Ag
B、Ag|AgNO3(a)||K2SO4(a)|PbSO4(s),Pb(s)
C、Ag(s),Ag2SO4(s)|K2SO4(a)||HCl(a)|AgCl(s),Ag(s)
D、Ag|AgNO3(a)||H2SO4(a)|Ag2SO4(s),Ag(s)
第2题:
第3题:
可以直接用来求Ag2SO4的溶度积的电池是
A.Pt|H2(p)|H2SO4(a)| Ag2SO4(s)|Ag
B.Ag|AgNO3(a)||K2SO4(a)|PbSO4(s)|Pb(s)
C.Ag(s)|Ag2SO4(s)|K2SO4(a)||HCl(a)|AgCl(s)|Ag(s)
D.Ag|AgNO3(a)||H2SO4(a)|Ag2SO4(s)|Ag(s)
第4题:
第5题:
若要在网页中插入样式表main.css,以下用法中,正确的是()。
A.<link href=”main.css” type=text/css rel=stylesheet>
B.<link src=”main.css” type=text/css rel=stylesheet>
C.<include href=”main.css” type=text/css>
D.<include href=”main.css” type=text/css rel=stylesheet>
第6题:
【单选题】若要在网页中插入样式表main.css,以下用法中,正确的是()。
A.<Link href=”main.css” type=text/css rel=stylesheet>
B.<Link Src=”main.css” type=text/css rel=stylesheet>
C.<Link href=”main.css” type=text/css>
D.<Include href=”main.css” type=text/css rel=stylesheet>