在统计学中能够提示差别有高度统计学意义的界限是（ ）
A．P≤0.01
B．P>0.01
C．P≤0.05
D．P>0.05
参考答案：A
.
A man was killed in his own house last Friday and the police are collecting evidence that is _______ the case.
A．familiar with
B．addicted to
C．relevent to
D．in need of
加油站卸油时，（）必须在现场监卸。
A.罐车司机
B.安全员
C.记账员
D.加油员
