流通加工成本是指一定时期内,企业为完成货物储存业务而发生的全部费用,包括仓储业务人员费用,仓储设施的折旧费、维修保养费、水电费、燃料与动力消耗等。
参考答案:错
30. —Why! I ____ get you on the phone.
— We ______ basketball on the playground when you phoned.
A.didn’t; must have been playing
B.didn’t; must be playing
C.couldn’t; must have played
D.couldn’t; must be playing
下列属于间接性安全技术措施的是()。
A、安全电压
B、警示标识
C、电气设备的漏电保护装置
D、电气设备的绝缘