【多选题】下列关于明细分类账簿的账页格式的表述,正确的有 ( ) 。
【判断题】对称三相电源,假设 U 相电压UU=2202sin(ωt+ 30V, 则V 相电压为UV=2202sin (ωt-120°) V 。
【判断题】对称三相电源,假设U相电压UU=220sin(ωt+)V,则V相电压为UV=220sin(ωt-120°)V。 错
【单选题】Refer to Exhibit 7-4. If the price of shrimp were to decrease from $12 to $10, the increase in consumer surplus would equal: The schedule below shows the prices that a consumer is willing to pay for p...
【单选题】借助Na + - K + 泵转运的方式是 ______过程。
【单选题】宴会,实际是一种( )的形式,所以不能始终保持沉默。
【判断题】对称三相电源,假设U相电压U U =220 sin(ωt+30 0 )V,则V相电压为U V =220 sin(ωt-120°)V。( )