He won the match because he took the advantage of his height.
A:played a joke on
B:made full use of
C:came up with
____
下列各式中,与2是同类二次根式的是( )
如图,AB⊥AC,AD⊥BC,已知AB=6,BC=9,则图中线段的长BD=____ ,AD=____ ,AC=____