皮皮学，免费搜题
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搜题
【单选题】
某企业于2004年投资100万元购入设备一台，现已提折旧20万元，则该设备的账面价值为80万元，目前的变现价值为70万元。如果公司拟购入一台新设备来替换就设备，则下列项目中，哪一数值属于机会成本：()A.
20
B.
70
C.
80
D.
100
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参考解析：
知识点：
皮皮学刷刷变学霸
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【多选题】提供智能建筑舒适服务功能的子系统有（）
A.
给水排水、电力供应、闭路电视
B.
结构化综合布线、商业服务
C.
空调通风、供热
D.
多媒体音响、智能卡、停车场管理、体育娱乐管理
E.
计算机网络、商业服务、饮食业服务
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A.
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B.
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