问题
多项选择题
根据《华润置地写字楼物业服务通用标准（2011版）》要求，锅炉本体、阀门、管线、油管、水箱、（）等无漏油、漏水、漏气，无锈蚀、尘垢，支架、螺栓紧固、无锈蚀。
A.法兰
B.燃烧器
C.水泵
D.烟道
答案
参考答案：A, B, C, D
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根据《华润置地写字楼物业服务通用标准（2011版）》要求，锅炉本体、阀门、管线、油管、水箱、（）等无漏油、漏水、漏气，无锈蚀、尘垢，支架、螺栓紧固、无锈蚀。
A.法兰
B.燃烧器
C.水泵
D.烟道
参考答案：A, B, C, D
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| Hi, my name is Peter. Last summer I had a 1 vacation. I went across the USA 2 my parents by car. We drove six to eight 3 a day. In big cities, we stayed in big hotels. The food 4 usually delicious. Most of the hotels had swimming pools and game rooms. I played there happily. But there were 5 people in the hotels, so we often had to sleep in one room. And it was expensive, 6 . Sometimes, we 7 in a small cabin in the mountains. I really loved it. The cabin was clean 8 quiet. We had two rooms, so I could get up late in the morning. But I always got up early 9 we wanted to go swimming. There was a beautiful lake 10 the cabin. We also went fishing and cooked food outside. | ||||
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