铣削用量选择的次序是：铣削速度、每齿进给量、铣削层宽度，最后是铣削层深度。（）
参考答案：错
Though all of us hate Chinese style road crossing, there are still ______ people crossing the road when traffic lights are red in Yancheng. It must be changed.
A．few
B．a few
C．little
D．a little
Crohn病与肠结核最重要的鉴别在于
A．有无发热、消瘦、乏力
B．有无肠外结核
C．肉芽肿有无干酪样坏死
D．病程的长短
