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

Researchers measured the data speeds for a particular smartphone carrier at 50 airports. the highest speed measured was 78.1 mbps. the complete list of 50 data speeds has a mean of x overbarequals16.11 mbps and a standard deviation of sequals18.65 mbps. a. what is the difference between carrier's highest data speed and the mean of all 50 data speeds? b. how many standard deviations is that [the difference found in part (a)]? c. convert the carrier's highest data speed to a z score. d. if we consider data speeds that convert to z scores between minus2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant? a. the difference is nothing mbps.

You have a small company and want to keep your costs low, but it is important your employees share data. which network would provide you with the most economical solution?

Which is the highest level of the hierarchy of needs model? a. humanity b. intrapersonal c. team d. interpersonal