单项选择题

牛头刨床工作台进与退的棘轮机构，棘轮齿为矩形齿，棘轮只能单向间歇转动，从而实现工作台的往复移动。
A、正确
B、错误

<上一题 目录 下一题>
热门 试题

单项选择题
听力原文： Attention, all passengers! Due to the heavy snowfall, the train cannot depart as scheduled and thus will be delayeD.We are anticipating the snowfall to subside shortly and delays to be from thirty minutes to an hour. Snow clearance crews are working to keep the trains on schedulE.For the exact timetable concerning your departure time and gate, please confirm with the daily departure schedule board located throughout the station. We will continuously provide you with updates as we are informed of them. We apologize for the inconvenience caused by the delay. If you have any questions or concerns regarding your specific schedule, please visit one of our customer representatives, located on the first floor of the station. Thank you for your time and attention. The staff and management at Eastern Central Station wish you a happy holiday and season's greetings!Where is the announcement taking place?A.At an airport.B.At a bus station.C.At a train station.D.At a weather station.
A.At
B.
B.At
C.
C.At
D.
D.At
E.
单项选择题
一个排序算法的时间复杂度与（ ）有关。
A．排序算法的稳定性
B．所需比较关键字的次数
C．所采用的存储结构
D．所需辅助存储空间的大小
相关试题