Remember the following words and expressions : e . g . multimeter ; circuit , current ; voltage ; resistance ; digital multimeter ; analogue multimeter ; analogue multimeter scales ; zero adjustment control ; zero adjustment control for resistance ranges ; measurement ranges switch ; transistor test socket ; meter probe ; positive terminal ; negative terminal ; anode ; cathode ; red lead ; black lead ; power supply ; connect in parallel ; connect in series 记住万用表、电路、电流、电压、电阻、数字万用表、模拟万用表、表头、机械零位调整器、欧姆零位调整器、量程选择开关、晶体管插孔、表棒、正接线端、负接线端、阳极、阴极、红导线、黑导线、电源、并联、串联等常用英文单词,并逐步掌握。