∵ a∥b,∴48=2y?y=4.
故答案是4.
Lily is ready ________ people any time, she always gives her seat to someone in need.
A.to help
B.help
C.helping
D.to helpful
这个仪表是何含义?()
A.电流表
B.压力表
C.水温表
D.燃油表