用原始资料计算中位数时,中位数位次的求法(排序后)是()。
A.总体单位数除以2
B.总体单位数加1后除以2
C.总体单位数除以2后加1
D.总体单位数除以3
参考答案:B
—Why does Joe look so _______ today?
—Because she has got an "A" in her English test. [ ]
A. exciting
B. sad
C. happy
D. angry
施工过程质量控制要求有哪些?如何进行消防设施到场检查?