有____个三角形
关于海陆分布的叙述,正确的是( )
I'd like to eat out, but, ________, I should be trying to save money.
已知 am=2,an=4,ak=32(a≠0).
(1)求a3m+2n﹣k的值;
(2)求k﹣3m﹣n的值.