【多选题】离心式水泵的基本参数有( )和转速及吸程等。
【单选题】Both the number and the amount of money involved in these cases have been increasing.
【单选题】Fridays we often go out to dinner, watch a movie,and talk – you know, the usual.
【多选题】离心式水泵的基本参数有( )和转速及允许吸上真空高度等。
【判断题】Both the number and the amount of money involved in these cases have been increasing.
【判断题】Both the number and the amount of money involved in these cases have been increasing.
【多选题】In which of these cases will not the tax burden fall most heavily on sellers of the good?
A.
The demand curve is relatively steep and the supply curve is relatively flat.
B.
The demand curve is relatively flat and the supply curve is relatively steep.
C.
The demand curve and the supply curve are both relatively flat.
D.
The demand curve and the supply curve are both relatively steep.