自然数a、b的最大公约数是b,最小公倍数是请选择CBA3H/[/i*N'U9U3E;I9[;|3v1b4s4]8T:j'D3M
A.a1b4s4]8T:j'D3M
B.b1b4s4]8T:j'D3M
C.ab1b4s4]8T:j'D3M