已知某一次函数的图象经过点A(0,2),B(1,3),c(a,1)三点;求这个一次函数的解析式及a的值。
解:设一次函数的解析式为
则由条件得
解之得:
即一次函数的解析式为:
— Jack, could you tell me _____?
— Sure. In the post office on Green Road. [ ]
A. where you bought the stamps
B. where did you buy the stamps
C. when you bought the stamps
D. when did you buy the stamps
TFDS分区域设置检查工位时,须按()检查区域分别设置。
A.转向架侧架
B.转向架底部
C.车钩缓冲
D.车底部