凯恩斯的经济分析中采用的是外推预期,并认为这种预期是造成经济波动,甚至爆发经济危机的重要原因。()
参考答案:错
一盏白炽灯泡铭牌上标有“220V 40W”字样,则这盏灯正常发光时的灯丝电阻为______Ω.灯泡正常发光1min,灯丝消耗的电能为______J.如果灯丝断了之后重新将灯丝搭上,灯丝电阻变为1100Ω,通电后灯泡消耗的功率为______W.
Jane Austen’ s first novel ________ tells a story about two sisters and their love affairs.
A.Sense and Sensibility
B.Pride and Prejudice
C.Northanger Abbey
D. Mansfield Park