共振结构_环境噪声控制工程_全学科试题题库

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共振结构
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Thank you for calling the Hong Kong Art cinema. There’s no one to answer your call at the moment. The Hong Kong Art Cinema is open 7 days a week, showing a variety of Chinese and foreign films. Next week we’ll show the Chinese film My Happy Life. You can see that film from Monday to Friday. It’ll be on twice a day in the evening, that’s at 8:10 and 10:30. The film lasts 2 hours. Tickets are 150 HK dollars, but there’s special student’s ticket at 50 HK Dollars for all our film. Please bring your student card if you want cheaper tickets. And the nearest car park to the cinema is on the Nathan Road, that’s N A T H A N, it’s just 5 minutes’ walk from the cinema. Thank you for calling the HK Art Cinema. If you require further information, phone our office number 9 AM to 5 PM on week days.

转化反应原料气中含（）ppm以上的硫化氢就可能造成转化催化剂失活，因此必须将反应物中所含的硫除去，本装置一般控制脱硫反应器出口硫化氢含量在（）ppm以内。