若元素a, b, c, d, e, f依次进栈，允许进栈、退栈操作交替进行，但不允许连续三次进行退栈操作， 则不可能得到的出栈序列是（ ）。 A. d, c, e, b, f, a

B. c, b, d, a, e, f

C. b, c, a, e, f, d

D. a, f, e, d, c, b

What are the steps involved in accepting all the changes in a document? arrange these in order click edit. click accept or reject. click changes. click accept all.

Amedian in the road will be marked with a white sign that has a black arrow going to the left of the median. true false

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