-
题目： 单选题下图为某地质剖面简图，图中4种岩石形成年代从早到晚排列正确的是（）
A①②④③
B②③④
C③④②①
D④②①③
答案不对？请尝试站内搜索
推荐知识点:
- 全挂牵引车
- 有关肾病综合征的描述．下列哪项除外？（）
- 绩效管理简报的内容不包括哪项（）
- 离心式压缩机油冲洗过程中，热油冲洗（），清理过滤网，杂质减少时，将过滤网更换为200目的，继续进行循环冲洗。
- 举例说明语义演变的结果。
- Many of the activities performed during the preliminary investigation are still being conducted in(1),but in much greater depth than before. During this phase, the analyst must become fully aware of the (2) and must develop enough knowledge about the (3)and the existing systems to enable an effective solution to be proposed and implemented. Besides the(4)for process and data of current system, the deliverable from this phase also includes the(5)for the proposed system. 空白（5）处填（）
- 劳动功能障碍分为十个伤残等级，最重的为十级，最轻的为一级。
- 六味地黄丸和地黄饮子两方组成中均含有的药物是（）
- 飞艇正在飞行过程中如突降大雨，则应（）
- 以下关于麻风的描述错误的是()