Applied research of the general aptitude test batte .

一般能力倾向成套测验（gatb）在大学生中的应用研究。

This product using solar-powered , built-in battery to use environmentally-friendly batte ries , saving energy also played a role in environmental protection .

本产品用太阳能供电，内置蓄电池使用环保电池，既节省了能源又起到了环保作用。