相对含水量
参考答案：
是指土壤自然含水量占田间持水量的百分数。
听句子，缩写原文。（）
A．I don’t think you have more to say on that topic.
B．I think we’d better talk about that in detail sometime later.
C．I am truly appreciative if you can elaborate on that topic after lunch.
D．I am busy right now, so we might as well discuss it over lunch today.
CRH380AL型动车组对牵引拉杆的检查标准？
