在、、三种物质中都含有（）A．两

在、、三种物质中都含有 请选择DCBA4V/Q8C9k*G4h3K;]0C7C/b2O9c5k.F'N5u8Z.x3F7r,F+d2u

A．两个氢原子/b2O9c5k.F'N5u8Z.x3F7r,F+d2u

B．1个氢分子/b2O9c5k.F'N5u8Z.x3F7r,F+d2u

C．氢元素/b2O9c5k.F'N5u8Z.x3F7r,F+d2u

D．氧元素/b2O9c5k.F'N5u8Z.x3F7r,F+d2u