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【单选题】
表示正态分布资料中的集中趋势最好采用A.meanB.varianeeC.percentileA.
表示正态分布资料中的集中趋势最好采用 A.mean
B.
varianee
C.
percentile
D.
standard deviation
E.
coefficient of vailation
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【简答题】在设置单位精度的过程中,最多可设置几位小数A. 6 B. 8 C. 10
【简答题】在设置单位精度的过程中，最多可设置几位小数 A、4 B、6 C、8
【单选题】---Sir, I’m terribly sorry for not having handed in my homework on time, but I have been very busy all these days. ---No excuse for it, but I drop it this time.
A.
might
B.
can
C.
should
D.
must
【单选题】I’m awfully sorry, but I had on alternative.I simply ( ) what I did.
A.
ought to have done
B.
have to do
C.
had to do
D.
must do
【简答题】在设置单位精度的过程中，最多可设置几位小数 A4 B、6 C8 D、10
【单选题】— Sorry, but I have to________now. I have a train to catch. — Goodbye!Wish you a pleasant journey. [ ]
A.
ring out
B.
call out
C.
call on
D.
ring off
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