A:S→点燃O2SO3→H2OH2SO4
B:Al2O3→△NaOH(aq)NaAlO2→CO2Al(OH)3
C:Mg(OH)2→盐酸MgCl2(aq)→蒸发无水MgCl2
D:Fe→高温H2OFe2O3→盐酸FeCl3
方程3x-2=2的解是____ .
This is _____ old street. It is called Liuzi Street.
下列有关人体激素调节的叙述中,正确的是( )