A:CO+H2OCO2+H2
B:3NO2+H2O=2HNO3+NO
C:2Na2O2+2H2O=4NaOH+O2↑
D:2F2+2H2O=4HF+O2
James Cameron is one of the most famous____(导演)in the world.
关于平面镜成像,下列说法正确的是( )
用配方法解一元二次方程x2+6x﹣8=0时可配方得( )