----Why is the man standing at the door

一病人，女，35岁，裂伤后8天，换药见肉芽组织表面光滑晶亮，呈淡红色，触及不出血，换药时应采取下列哪种措施

A．3%～5%氯化钠湿敷
B．凡士林纱布覆盖
C．抗生素溶液温敷
D．局部紫外线照射
E．3%过氧化氢湿敷

尿毒症患者最常见的死亡原因是（）

A.呕吐

B.高血压

C.心力衰竭

D.心包病变

E.血管钙化

货币存量

设有选课表，表中包含字段有：学号N(6)，课程号C(6)，成绩N(4)。要查询每门课程的学生人数，要求显示课程号和学生人数，对应的SQL语句为： SELECT 课程号,COUNT(学号) AS 学生人数 FROM 选课表; GROUP BY______

In managing a project，you notice that a deliverable mentioned in the general conditions of the contract has not yet been received．The seller，however，says the special provisions of the contract void that deliverable．What should you do ？（）

A．Require the deliverable as in the contrac

B．Do nothin

C．Contact the contract manage

D．Send a letter requiring the deliverable is me