题目内容

单选题 A (n) ____list is also known as a queue.

A. LIFO
B. FIFO
C. unordered
D. ordered

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单选题 A (n) ____ list is also known as a stack.

A. LIFO
B. FIFO
C. unordered
D. ordered

单选题 If A is the first data element input into a stack followed by B, C, and D, （）is the first element to be removed.

A
B
C
D

If A is the first data element input into a queue followed by B, C, and D, （）is the first element to be removed.

A
B
C
D

填空题 If the tree is not empty, the first node is called , which has the indegree of .