【简答题】"紧急电空阀得电时,连通()向电动放风阀膜板下侧充风的气路,以控制电动放风阀开放列车管的放风气路;而其失电时,则连通电动放风阀铜碗及膜板下侧向大气排风的气路,以控制电动放风阀切断列车管的放风气路。"
【判断题】当在循环语句中使用continue语句时,能跳出循环语句。
【判断题】在循环语句中使用continue语句是为了结束本次循环,而不是终止整个循环。
【多选题】根据《联合国国际货物销售合同公约》的解释,构成有效发盘的条件包括
【单选题】计算(2ab) 2 ÷ab 2 ,正确结果是( )
【简答题】I ___ (leave) in a minute. I ___ (finish) all my work before I ___ (leave).
【单选题】I don't feel very happy in my job. In fact I am going to leave. ______ I can get a new one.
【判断题】紧急电空阀失电时,切断列车制动管的放风气路。( )
【简答题】When I was a ager growing up in Russia, I felt studying very boring, I wanted to leave school and have my own life. There were only two ways for me to do this—working in the toy factory in my town...