Which of the following commands cannot use the functionality assosciated with theNLS_DATE_FORMAT variable?() ["RESTORE","RECOVER","REPORT","BACKUP"]
城市交通线网布局的类型?
什么是软件的生存周期?如何划分软件的生存周期?
水利建设市场主体不良行为记录的公告应坚持()原则 ["准确、公开、及时","公平、公正、客观","准确、及时、客观","准确、公正、客观"]
按GB5071-1996《液压电梯》规定,限速切断阀的动作速度应小于轿厢下行额定速度υd的倍,但不得大于()(用米每秒)表示。 ["1.25;υd+0.3","1.25;υd+0.5","1.4;υd+0.5","1.5;υd+0.3"]
变电站的继电保护装置(),退出等操作,须由变电站()负责执行。