gōng / chéng / shī / xū / yào / gēn / jù / diàn / lù / yāo / qiú / xuǎn / zé / hé / shì / de / piān / zhì / diàn / zǔ工程师需要根据电路要求选择合适的偏置电阻。The engineer needs to choose a suitable bias resistor according to the circuit requirements.