A:溶解度:Na2CO3<NaHCO3
B:热稳定性:HCl<PH3
C:沸点:C2H5SH<C2H5OH
D:碱性:LiOH<Be(OH)2
填空(用分数表示)
27秒=____分
5分米=____米
已知幂函数y=f(x)的图象过点(2,2),则f(9)=____
Tim Cook called his mother every week even while he_______ around the world.