【简答题】在电阻元件的交流电路中,电压和电流的相位( ) A.相同 B .电压的相位比电流的相位超前 90° C.电压的相位比电流的相位落后 90°
【单选题】It is free market and it controls most of the ___ of savings to investment.
【简答题】The author of the text seems to oppose the idea of______. [A] free market [B] military control [C] strict regulations [D] unrestrained labors
【单选题】Which of the following is NOT included in the prescription of traditional free-market orthodoxy?
【判断题】直流电路和交流电路中电阻的电压和电流表示相同值 。
【判断题】在正弦交流电路中,电阻元件上的电压与电流同相,说明总电路电压和电流的初相一定为零。( )
【单选题】Which of the following world market is characterized by free competition?()
【判断题】The best interests of society will be met if forests are managed in an unfettered free market.
【单选题】Zhou Qiren, a professor in Beijing University, believed that business in the market economy must______the right balance between their pursuit of profits and the needs of customers.