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【多选题】
对集中式空调系统描述正确的是()。A.
空调设备集中设置在专用空调机房里,管理维修方便,消声防振容易;
B.
可根据季节变化调节空调系统的新风量,节约运行费用
C.
占有建筑空间小,房间单独调节难;
D.
使用寿命长,初投资和运行费比较小。
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】生态因子的概念是
【单选题】The workers were making so much noise in the workshop, and the boss hurriedly Went to see____.
A.
what thematter was
B.
what was the wrong
C.
what wrong was
D.
what was the matter
【简答题】请回答:环境、生态因子的概念,及生态因子类型
【简答题】生态因子的概念
【单选题】要提高血中CO2CP 5mmol/L应加入
A.
5%碳酸氢钠1ml/kg
B.
5%碳酸氢钠5ml/kg
C.
1.4%碳酸氢钠1ml/kg
D.
1.4% 碳酸氢钠5ml/kg
E.
1.87%乳酸钠1ml/kg
【单选题】The workers were making so much noise in the workshop, and the boss hurriedly went to see ____.
A.
what the matter was
B.
what was the wrong
C.
what wrong was
D.
what was the matter
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