单位成本是指每个菜点单位所具有的成本。( )
参考答案：对
She couldn't find her pen. She didn't remember _____. [ ]
A. whose it was
B. where it was
C. what it was
D. when it was
从法律角度看，企业的招工简章或就业规则（）。
A.具有要约的法律效力
B.不具有要约的法律效力
C.必须经过司法部门公证后，才具有要约的法律效力
D.必须经过劳动行政部门鉴证后，才具有要约的法律效力
