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The operation of removing an element from the stack is said to（ ）the stack.
A.pop
B.push
C.store
D.fetch
B.push
C.store
D.fetch
参考答案
参考解析
解析：从栈中删除一个元素的操作可以称为从栈中取出来。栈（stack）又名堆栈，它是一种运算受限的线性表。其限制是仅允许在表的一端进行插入和删除运算。这一端被称为栈顶，相对地，把另一端称为栈底。向一个栈插入新元素又称作进栈、入栈或压栈，它是把新元素放到栈顶元素的上面，使之成为新的栈顶元素；从一个栈删除元素又称作出栈或退栈，它是把栈顶元素删除掉，使其相邻的元素成为新的栈顶元素。pop stack表示出栈。
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