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1·An index lets you plot and compare prices in 20 of the more important economies over several years (for some countries you can check back as far as 1973).

图表指数工具可使您绘制、比较20个重要经济体(有些国家可查阅早自1973年的数据)几年以来的房价。

2·Use the graphing program of your choice to plot the results and check whether they form a straight line. Can you estimate the value of s?

选一种投图程序，把结果进行投图，然后检查一下是否为一条直线。

3·The tester can be used for AC and mechanical soft-starter to check and validate the performance of slow and uniform start and on-line plot the starting curve of tested object.

本装置可对各种交流电软起动设备、机械式软起动设备等被试件进行慢速平稳起动性能的试验，并可实时绘制软起动设备起动曲线。