A doctor purchases medical supplies of $640 and pays $290 cash with the remainder on account. The journal entry for this transaction would be which of the following?
A. SuppliesAccounts ReceivableCash
B. SuppliesAccounts PayableCash
C. SuppliesAccounts PayableCash
D. SuppliesAccounts ReceivableCash
查看答案
具有n个顶点的完全有向图的弧数为()
A. n(n-1)/2
B. n(n-1)
C. n*n
D. n*n-1
一个具有n(n>0)个顶点的连通无向图最少有( )条边。
A. n-1
B. n
C. n+1
D. n+2
一个n条边的连通无向图,其顶点的个数最多为()
A. n-1
B. n
C. n+1
D. nlogn
任何一个无向连通图的最小生成树()
A. 只有一颗
B. 有一棵或多棵
C. 一定有多棵
D. 可能不存在