【单选题】某种商品的价格变动10%,需求量随之变动20%,则它的弹性系数为( )。A.10% B.30% C.50% D.2
【单选题】某种商品的价格变动10%,需求量随之变动30%,则它的弹性系数为( )
【单选题】3某种商品的价格变动10%,需求量随之变动20%,则它的弹性系数为( )
【单选题】Servic engineers can improve their productivity and ----- by using cell phones.
【单选题】Investment in the public sector, such as electricity, irrigation, quarrying, public services and transport (excluding vehicles, ships and planes) increased by about 10%, although the emphasis moved to...
A.
spending more money than they earn
B.
investing and consuming at an accelerated pace
C.
saving more money than previously
D.
spending their money wisely
【单选题】1905年至1907年,资产阶级革命派与改良派论战的焦点是