西方公务员一般分为“政务官”和“事务官”,我国公务员法也实行了这一制度。
参考答案:错
28. No decision about any future plan until we have done a thorough research of the teachers’ preference.
A.has been made
B.is made
C.is being made
D.will be made
在直线回归分析中,如果算得回归系数b>0,可以认为β()
A.大于0
B.小于0
C.等于0
D.不等于0
E.还需进一步检验确定