皮皮学，免费搜题
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搜题
【单选题】
某产品的盈亏平衡点业务量为300件，此时的变动成本总额为600元，固定成本总额为600元，问每超过盈亏平衡点1件的利润是A.
4元
B.
2.5元
C.
2元
D.
1元
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【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.
正确
B.
错误
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