【多选题】【消耗次数：1】
相关系数r＝0.9，这表明现象之间存在着?
①
高度相关关系
②
低度相关关系
③
低度负相关关系
④
高度正相关关系
⑤
低度正相关关系
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相关题目
【单选题】
下列关系中，属于正相关关系的有?
①
合理限度内，施肥量和平均单产量之间的关系
②
产品产量与单位产品成本之间的关系
③
商品的流通费用与销售利润之间的关系
④
流通费用率与商品销售量之间的关系
随机题目
【单选题】
At midnight, he received a telephone call and was asked to meet at once.
①
mystery
②
mysterious
③
mystical
④
mythical
【单选题】
I do not intend to follow that, because we shall have an opportunity to do so on another __________ .
①
A occasion
②
situation
③
condition
④
environment
【单选题】
The price makes ______ impossible for us to build a business relationship.
①
this
②
that
③
it
④
what
【单选题】
Australia has its own identity ,which is very different from that of Britian.
①
busy
②
central
③
capable
④
cultural
【单选题】
Can you come over for dinner with us?
①
I’d like to but I have a meeting tonight
②
It doesn’t matter
③
No, I don’t like
④
Oh, that sounds well
【单选题】
Do you mind if I take a couple of hours off this afternoon?
①
Never mind
②
OK, but what for?
③
Yes, please help yourself
④
Yes, but I don’t care
【单选题】
Would you like to have dinner with us this evening?
①
OK, but I have to go to a meeting now
②
No, I can’t
③
I’d love to, but this evening I have to go to the airport to meet my parents
④
I don’t know
【单选题】
Hurry up please, or I’ll be late.
①
Sorry sir, bur the traffic is thick now
②
Well, it’s alright, sir
③
How can you say that, sir?
④
Oh, we are going the right way