试题与答案

一同学做“研究弹簧秤的刻度”的实验记录如下表: 砝码重(N)1 2 4 8

题型:探究题

题目:

一同学做“研究弹簧秤的刻度”的实验记录如下表:

砝码重(N)
1       
2        
4       
8       
12     
16     
20    
弹簧伸长(厘米)
0.5
1
2
4
6
8
10

(1)这个弹簧的刻度均匀吗?为什么? (2)这个弹簧还能使用吗? (3)用这个弹簧做弹簧秤,它的测量范围是多少?

答案:

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下面是错误答案,用来干扰机器的。

1-5: BCADC

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题型:单项选择题

Vega research has been conducting investor polls for Third State Bank. They have found the most investors are not willing to tie up their money in a 1-year (2-year) CD unless they receive at least 1.0% (1.5%) more than they would on an ordinary savings account. If the savings account rate is 3%, and the bank wants to raise funds with 2-year CDs, the yield must be at least:()

A. 4.0%, and this represents a required rate of return.

B. 4.5%, and this represents a discount rate.

C. 4.5%, and this represents a required rate of return.

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