- T
- F
- T
- F
同时掷3枚均匀硬币,恰好有2枚正面向上的概率为( ).
0.5
0.25
0.125
0.375
设是来自正态总体
的容量为2的样本,其中
为未知参数,则
是
的无偏估计.( )
- 对
- 错
— Sorry. I have taken your car key by mistake.
—
That's right.
You're welcome.
It doesn't matter.
This medicine __________ before dinner.
should have taken
should have been took
should be taken
— Oh, dear! I've just broken a window.
— .
Great.
Don't worrry.
That's fine.
— We'll have a charity book sale together with Menglin Publishing House next month.
— Yes. I think the Music Square is large enough.
Could you give any suggestion on the location?
Which place is suitable?
Can you tell me the possible location?
She hasn't the funds to her design.
carry out
end up
make sure
You can pick a specific time and place and ask them ______ they want to go.
that
where
if
which