在UFO报表中，舍位公式中的位数是指（）
A.小数点向左移动的位数
B.小数点向右移动的位数
C.小数点后需要保留的位数
D.以上均不正确
参考答案：A
— I phoned you at six last night, but _____ answered.
— I _____ a walk in the park at that time. [ ]
A. no one, was having
B. anyone, was having
C. nobody, had
D. somebody, had
拆除施工在立体交叉、水平作业时，各工位间应有一定的安全距离。
