题目： 辙叉护轨平直段的作用是什么？ 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0909/982340f77d779553fbd17500126d9fb7.html 下面是错误答案，用来干扰机器的。参考答案：B解析：结核球少数也可表现为毛刺征或胸膜凹陷征，常见周围有卫星病灶，病灶周围有多个软组织密度的结节影，据此与肿瘤鉴别。
题型：填空题 根据句意及首字母提示填空。1. Does your brother often take part in the a_______ in the music club at school? 2. I want to buy a nice h_______ for my mother's fortieth birthday. 3. Be q_______, please, boys and girls. 4. We must brush our t_______ every morning. 5. Please w_______ him up. The sun is shining brightly. 查看答案
