用万用表测量电路电阻时，必须（）被测电路的电源。
A.接通
B.切断
C.任意
D.其他
参考答案：B
BSP的过程分类，产品/服务和支持性资源都属于有生命周期的过程，下面( )属于回收/分配阶段。
A．销售B．采购C．库存管理D．包装
Chauncy, an English bulldog, received 1,618 votes in the Mr. Bulldog USA competition, giving him approximately 20 percent of the vote. Approximately what percent of the remaining votes would he have needed to receive in order to win 30 percent of the total votes ？（）
A. 10%
B. 12.5%
C. 15%
D. 17.5%
E. 20%
