不属于施工准备工作按施工范围分类的是()。
A.单项工程施工准备
B.分项工程作业条件准备
C.全场施工准备
D.施工阶段前施工准备
参考答案:D
该患者创面紧急处理应首选
A.包扎疗法
B.暴露疗法
C.大量清水长时间冲洗
D.切除厚痂
E.使用碱水冲洗
Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of this mixture is X ?()
A.A
B.B
C.C
D.D
E.E