【单选题】【消耗次数：1】
几何平均数主要适用于计算?
①
具有等差关系的数列
②
变量值的连乘积等于总比率或总速度的数列
③
变量值为偶数项的数列
④
变量值的连乘积等于变量值之和的数列
参考答案：
复制
纠错
相关题目
【判断题】
两种变量值变化方向无一定规律，即一种变量值变化时，另一种变量值可能变化也可能不变化，并且不变或变大、变小的情况为随机的，这两种变量之间的关系称为零相关( )。
①
正确
②
错误
随机题目
【单选题】
This box is ________ that one.
①
heavy than
②
so heavy than
③
heavier as
④
as heavy as
【单选题】
-Whats your brother like?
-He is _________.
①
adriver
②
very tall
③
myfriend
④
atschool
【单选题】
Now Mike isn’t here. He ________ Mr. Green’s. Perhaps he ________ back in a few minutes.
①
went to ; is coming
②
has gone to ; will come
③
has been to ; will be
④
is going to ; has come
【单选题】
This bright girl __________ the truth in front of the enemy.
①
didn’t say
②
couldn’t speak to
③
said
④
didn’t tell
【单选题】
Every time I _________ there, I will buy him something nice.
①
went
②
will go
③
go
④
have gone
【单选题】
The bridge which ________ last year looks really beautiful.
①
was built
②
built
③
was set up
④
had been built
【单选题】
She ________ the door before she goes away.
①
had locked
②
is locking
③
has locked
④
was locking