新古典经济学的定义只是指需求是不能全部满足的。（）
参考答案：错
Are you _____ of the mistakes you made in your final English test? [ ]
A. awared
B. unforgettable
C. awaring
D. aware
道岔尖轨要与基本轨密贴，间隙不大于（）毫米。
A.2
B.3
C.4
