【单选题】假设V1和V2是用DW定义的变量,下列指令中正确的是______。
【单选题】不关层门能选层开梯,是门锁开关触点( ),使门锁继电器在未关门状态下吸合。
【简答题】Helen had to shout _______ above the sound of the music. A. herself hear B.to make herself hear C. herself heard D.to make herself heard
【单选题】享受国家奖助学金学生初审名单经学生处组织复核无异议后报( )学校学生资助工作领导小组审定,并在全校公示,公示时间不少于3-5日
【单选题】选好层定了向并已关闭厅门、轿门,电梯仍不能运行,其原因可能是厅门自动门锁触点未能( )。
【单选题】Helen had to shout _____ above the sound of the music. [ ]
【单选题】Helen had to shout ______ above the sound of the music.