各种信号标志（警冲标除外）设在距钢轨头部外侧不小于2米处。（）
参考答案：错
Even if they are on sale, these air-conditioners are equal in price to , if not more expensive than , ______ , at the other store.
A．anyone
B．the others
C．that
D．the ones
计算并填写下表。
45（）
