A:价值尺度、支付手段、流通手段
B:支付手段、流通手段、价值尺度
C:支付手段、流通手段、世界货币
D:支付手段、流通手段、贮藏手段
— Where was your dad at this time last night? —He was talking with my uncle I was looking for some information on the Internet.
下列物质在氧气中燃烧的现象,正确的是( )