根据相图，以铁素体为基体的亚共析钢可满足要求材料具有较好强度和韧性或要求材料具有高的塑性韧性的要求。（）
参考答案：对
If none of the following bed positions is contraindicated, which position would be preferred for the client with hypovolemic shock
A. Supine.B. Semi-Fowler’s.C. Trendelenburg’s.D. Supine with the legs elevated 15 degrees.
白色污染是继大气污染、水质污染之后的又一让人头疼的环境公害。[ ]
