风险识别是一项复杂的工作,常见的可用于风险识别的技术和工具包括( )。
A.层次分析法
B.项目工作分解结构(WBS)
C.看板管理
D.模糊数学法
参考答案:B
如下图所示,A、B是两个完全相同的金属球,都放在绝缘支架上。A带大量负电荷,B带大量正电荷,用铜导线C连接两球,则
A.电子从B流向A,电流方向从A到B
B.电子从A流向B,电流方向从B到A
C.正电荷从B流向A,电流方向从A到B
D.正电荷从A流向B,电流方向从B到A
_____, the population of China is the largest in the world. [ ]
A. It is known that
B. As is well known
C. Which is well known
D. We all know that