【单选题】In the short run, a decrease in the federal funds rate by the Fed
A.
lowers the real interest rate, decreases investment, and shifts the AD curve rightward.
B.
lowers the real interest rate, increases investment, and shifts the AD curve leftward.
C.
raises the real interest rate, decreases investment, and shifts the AD curve rightward.
D.
None of the above answers is correct.
【单选题】三相异步电动机星型连接降压启动时启动转矩只有三角形连接直接启动时的
【判断题】文学史上很多作品都是因为塑造了新人形象而名垂青史,如鲁迅的《狂人日记》、巴金的《家》、柳青的《创业史》等。
【单选题】在 X 线机电路中 , 高压整流器位于 :
【单选题】In the short run, a monopolist:
A.
always suffers an economic loss.
B.
always earns an economic profit.
C.
always earns a normal rate of return.
D.
may make an economic loss, an economic profit, or zero economic profits.
【简答题】电动机星三角降压启动时,每相定子绕组上的转矩为三角形运行时的( )A. 三分之一
【多选题】时代的发展不断地产生新人形象,文学史上很多作品都是因为塑造了新人形象而名垂青史,如( )。