“You were tired, weren’t you?” “Yes, but ___.”
A.very
B.very much
C.a little
D.little
答案:C
简述假山布置的基本原则。
设生产函数为Q=ALαKβ,其中Q是产出量,L是劳动投入量,K是资本投入量,而A,α,β均为大于零的参数,则当Q=1时K关于L的弹性为______.