C+O2 点燃__ CO2 2H2+O2 点燃__ 2H2O 4P+5O2 点燃__ 2P2O5
找出它们的共同点,并写出其中两点.
____;____.
_______ plays an important part in winning the fight against the serious disease?
已知函数f(x)=sin(2x+π3),将y=f(x)的图象向右平移π3个单位长度后,得到函数g(x)的图象,若动直线x=t与函数y=f(x)和y=g(x)的图象分别交于M、N两点,则|MN|的最大值为____
读城市地域结构的理论模式示意图,以下叙述正确的是( )