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小明在探究机械效率的影响因素时先后按下图(a)、(b)所示两种情况,将实验器材安装好。(1)小明____向上拉动弹簧测力计,小明用刻度尺测出钩码上升
When Xiao Ming explored the influencing factors of mechanical efficiency, he successively pressed the two situations shown in (a) and (b) to install the experimental equipment. (1) Xiaoming ____ pulls the spring dynamometer upwards, and Xiaoming uses the scale to measure the rise of the hook code.