【简答题】真空制动机是以 (与真空的压差)为原动力,以改变 来操纵控制。
【简答题】选择合适的词组并用其正确形式填空。 1. warn sb. to do 2. provide sth for sb. 3. in all directions 4. be remembered for 5. argue with 1. It's silly of you ________ him about such an easy question. 2. Dr Bethune wi...
【单选题】电控燃油喷射系统保持压力下降较快,应检查燃油泵上的 ( ) 和燃油系统的密封性。
【简答题】看一看,选一选。 It's ______(windy/sunny) in Hangzhou. It's ______(cloudy/snowy) in Harbin. I can see three _______(potatoes/tomatoes). I want seven _______(carrots/carrot). I can see a _______(cat/rabbit).
【判断题】书写二度音程时,低音在右,高音紧挨其左。()