【单选题】The electric shaver needs ______ before it can be used.
【单选题】The electric shaver ______ before it can be used.
【单选题】The electric shaver______before it can be used.
【单选题】The electric shaver ______ before it can be used.
B.
requires to be repaired
【判断题】在充电过程中,为了冷却车载充电器可能会自动接通电动冷却液泵和电子扇。( )