【判断题】各种账簿应当按年度分类归档,编造目录,妥善保管.既保证在需要时迅速查阅,又保证各种账簿的安全和完整.保管期满后,还要按照规定的审批程序批准后才能销毁。( )
【单选题】MIB( information block,主信道板)的TTI有多长( )
【单选题】Helen has got it takes to be a great tennis player. In other words, she has the potential to become world famous.
【单选题】MIB( information block,主信息块)的TTI有多长()。
【简答题】配电线路常见故障有哪几种?其中室内线路造成短路故障的原因有哪些?
【判断题】电阻在电路中常见的故障一个是烧断,另一个是烧短,还有就是阻值改变()
【单选题】Helen has got the __________today.