草食性的反刍类动物中,食物主要是从何处返回口腔咀嚼?() ["皱胃","网胃","瘤胃","瓣胃"]
行政诉讼中,在向人民法院提交证据前,应当对证据材料先做哪些处理工作() ["对其提交的证据材料分类编号","写一份说明证据材料的来源、证明对象和内容的说明","注明提交日期","在证据材料上签名或盖章"]
哈尔滨地铁一号线轴端组成又分为三种,分别为()安装组成、()安装组成、()安装组成。
管网压降、低压管网一般控制在工作压力的5-8%,压缩空气流速,一般干线取8-10m/s,车间支管取()。
If a vessel takes a sudden,severe list or trim from an unknown cause,you should FIRST(). ["determine the cause before taking countermeasures","assume the shift is due to off-center loading","counterflood","assume the cause is environmental force"]
贷款定期结息提供()结息周期。