【单选题】等产量曲线上各点代表的是( )
B.
为生产同等产量而投入的要素的各种组合比例是不能变化的
【单选题】公路隧道全断面开挖法不适用于( )车道隧道和停车带区段开挖。
【单选题】Ivy league does Not include______.universities or colleges.
【单选题】Which university does not belong to Ivy League?
D.
Massachusetts Institute of Technology
【单选题】Which one does not belong to the Ivy League?