曲线
在t=0对应点处的法线方程为______.
参考答案:[*]
解析:[详解] [*] 于是法线为y-1=[*],即法线方程为[*]
The students were all ___after they heard the ____story.
A.inspired; inspiring
B.inspired; inspired
C. inspiring; inspired
D.inspiring; inspiring
分配阀均衡部是利用容积室压力的变化来控制()的充排气,使机车达到制动、缓解和保压的目的。