浆细胞瘤和B细胞杂交瘤生长因子是()
A.IFN-α、TNF-β
B.TNF-α、IL-1
C.IL-2、IFN-γ
D.IL-6
E.IL-6、IL-1
参考答案:D
总进度计划不属于( )。
A.建设监理单位的计划系统 B.施工单位的计划系统C.设计单位的计划系统 D.工程项目年度计划
While staying in Scotland alone, _____. [ ]
A. loneliness was always around me
B. many interesting places were visited
C. I was a bit homesick
D. my friends in China encouraged me a lot