设X1,X2,X3,X4为来自总体N(1,σ2)(σ>0)的简单随机样本,则统计量服从的分布为().
A.N(0,1)
B.t(1)
C.x2(1)
D.F(1,1)
第1题
How many ways are there to get in touch with the Harcourt Learning Direct?
A.One.
B.Two.
C.Three.
D.Four.
第2题
()destination, we regret to advise that Oslo is unacceptable as direct sailings from ourport.
A、About
B、As to
C、As
D、For
第3题
A.4
B.8
C.16
D.32
第4题
A foreman's salary is a direct cost with respect to the department's individual products.
A.正确
B.错误
第5题
第8题
A、what goal to reach
B、how hard the individual will work
C、how long the individual maintais his/her effort
D、how successful an individual is
第9题
How will the man go to his destination (目的地)?
A.By air.
B.By sea.
C.By train.
第10题
I watched many films ____ by this director.
A、direct
B、to direct
C、directing
D、directed
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