人力资源计划的核心是()
A、计划的制定者
B、具体内容
C、计划的周期
D、对环境的分析
参考答案：B
《工程建设项目招标范围和规模标准规定》中指出，施工单项合同估算价在( )万元人民币以上的工程项目必须进行招标。
A．50 B．100 C．200 D．500
_____ I noticed the puzzled look on his face, I realized that he didn't understand me. [ ]
A. Although
B. When
C. Unless
D. Until
