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一、填空题 1.4.5×10~4伏=____毫伏=____千伏. 2.一节蓄电池的电压是___伏;4节干电池串联使用的电压是___伏,并联使用的电压是___伏;家庭电路的电压是___伏。
First, fill in the blank 1.4.5 × 10 ~ 4 volts = ____ millivolt = ____ kilovolt. 2. a battery voltage is ___ volts; 4 dry cell series voltage is ___ volts, parallel The voltage used is ___ volts; the voltage of the home circuit is ___ volts.