FTGS-917型轨道电路与国内的轨道电路最大的区别就是:实现的方式不同。国内的轨道电路是采用机械绝缘节来划分区段,而是使用电气绝缘节来划分区段的
参考答案:FTGS
在□÷7=54…□,被除数最大是______,最小是______.
根据所给提示,完成句子。每空一词,含缩略词。
小题1:There was a football match on TV last night.(变为一般疑问句)
_______ __________ a football match on TV last night ?
小题2:He’s been in China since ten years ago.(变为否定句)
He ________ _________ in China since ten years ago.
小题3:Tom got up early in order to catch the first bus to Chongqing.(同义句)
Tom got up early ______ _______ he could catch the first bus to Chongqing.
小题4:Steve will finish his book in a month. (对划线部分提问)
_______ _________ will Steve finish his book?
小题5:邮件英语是一种为了节约时间而正在被使用的书面语。(完成句子)
E-mail English is a kind of _______ English which is being used to ______ time.