分布数列按其分组标志不同可分为()。
A.品质分布数列
B.变量分布数列
C.品质标志数列
D.数量标志数列
参考答案:C, D
He looked around and caught a man __________ his hand into the pocket of a passenger.
A.put
B.to be putting
C.putting
D.to put
调节体温中枢,导致患者体温升高的细胞因子是 ()
A.IL-6
B.IFN
C.TNF
D.IL-1
E.IL-8