下列脊柱病变中,椎间盘破坏发展最快的是()
A.强直性脊柱炎
B.结核
C.化脓性骨髓炎
D.布氏杆菌病
E.伤寒
参考答案:B
正态分布变量标准化的公式为()。
A.Z=(观测值-标准值)/均值
B.Z=(观测值-中位值)/标准差
C.Z=(观测值-均值)/标准差
D.Z=(均值-观测值)/方差
The girl tried to escape after the theft, but having found that, the shop assistant seized her _____ the hair.
A.in
B.with
C.by
D.at