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【单选题】
在假设检验中,原假设 ,备择假设 ,则称( )为犯第二类错误。A.
为真，接受
B.
不真，接受
C.
为真,拒绝
D.
不真，拒绝
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反馈参考答案：
举一反三
【单选题】Travel in space can be very exciting; ________, it can also be boring and lonely at times.
A.
so
B.
however
C.
thus
D.
therefore
【单选题】Travel in space can be very exciting; ________, it can also be boring and lonely at times.
A.
so
B.
however
C.
though
D.
thus
【简答题】Model 1: She heard it. Sound cannot travel in space. → She heard that sound cannot travel in space. 5. I wonder about it. What can we do for the poor?
【简答题】Travel in space can be very exciting; ( ), it can also be boring and lonely at times.
【单选题】There will be a space hotel in Barcelona Island, you can “experience” space travel by viewing lifelike galaxies through cabin windows.
A.
when
B.
where
C.
which
【简答题】试简述做好出口单据工作的重要意义。
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