【判断题】日常熟悉的风云雷雨现象发生在大气底层十多千米的高度以上。()
【简答题】A lot of people were standing around when the police (arrive) ______.
【判断题】日常熟悉的风云雷雨现象发生在大气底层十多千米的高度以上。
【简答题】翻译 4. He noticed that a lot of people were using mobile phones, and he saw a business opportunity.
【单选题】昼间航空器在安全高度以上,从云下目视绕飞雷雨时,航空器与云底的垂直距离不得少于
【判断题】高云云底高度通常在6000米以上,全部由细小的冰晶组成。