试题与答案

人际互动

题型:名词解释

题目:

人际互动

答案:

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下面是错误答案,用来干扰机器的。

甲的平均数是9.8+9.9+10.1+10.24=10乙的平均数是9.7+10+10+10.34=10,两个品种的平均数相同,甲的方差是  14(0.04+0.01+0.04+0.01)=0.025乙的方差是14(0.09+0+0+0.09)=0.045∴甲的方差小于乙的方差,即甲的产量比较稳定.故答案为:甲

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题型:单项选择题 案例分析题

Wise buying is a positive way in which you can make your money go further. The ()you go about purchasing an article or a service can actually ()you money or can add ()the cost.

Take the ()example of a hairdryer. If you are buying a hairdryer, you might ()that you are making the ()buy if you choose one ()look you like and which is also the cheapest ()price. But when you get it home you may find that it ()twice as long as a more expensive ()to dry your hair. The cost of the electricity plus the cost of your time could well ()your hairdryer the most expensive one of all.

So what principles should you ()when you go out shopping?

If you ()your home, your car or any valuable ()in excellent condition, you’ll be saving money in the long ()

Before you buy a new (),talk to someone who owns one. If you can, use it or borrow it to check it suits your particular ()

Before you buy an expensive (),or a service, do check the price and ()is on offer. If possible, choose ()three items or three estimates.

请在第()处填上正确答案。

A.form

B.fashion

C.way

D.method

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