工程项目范围定义一般采用( )方法。
A.工作分解结构
B.系统分析
C.专家咨询
D.单元确认
参考答案:A
具有急性肝炎临床表现的病人具备下列哪项可以确诊为甲型肝炎()
A.抗HAVIgM
B.抗HAVIgG
C.粪便中检出HAV抗原
D.粪便中检出颗粒HAV
E.粪便中检出HAVRNA
Only an hour ago _______out why he was absent
A did the teacher found B.the teacher found
C.did the teacher find D.had the teacher found