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当前学科：注册暖通工程师
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在高层住宅加压送风系统中，部分设计院对地上、地下加压送风量的计算取值、风口采用类型及自控方式等存在差异，余压值的保证手段哪一种较合理。
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Please fill the blanks in the following question of instalment shipments to denote the similarities (3), 4), 7), 8)) and differences (1), 2), 5), 6)) between Example 1 and 2. Instalment shipments in Example 1 1st. 10,000 kgs latest on 30 April, 200× 2nd. 10,000 kgs latest on 31 May, 200× 3rd. 10,000 kgs latest on 30 June, 200× 1)The 2nd and 3rd shipments may be effected by the time of the ______ shipment. 2)The 3rd shipment may be effected by the time of the ______ shipment. 3)If the 1st shipment is not effected by 30 April, the credit would cease to be available for the ______ and the ______ shipments. 4)If the 1st shipment has been effected in time, and the 2nd shipment is not effected by 31 May, the credit would cease to be available for the ______ shipment. Instalment shipment in Example 2 4th, 10,000 kgs between 1 April, 200× to 30 April, 200× 5th, 10,000 kgs between 1 May, 200× to 31 May, 200× 6th, 10,000 kgs between 1 June, 200× to 30 June, 200 × 5)The 5th and 6th shipments may ______ be effected by the time of the 4th shipment. 6)The 6th shipment may ______ be effected by the time of the Sth shipment. 7)If the 4th shipment is not effected by 30 April, the credit would cease to be available for the ______ and the ______ shipments. 8)If the 4th shipment has been effected in time and the 5th shipment is not effected by 31 May, the credit would cease to be available for the ______ shipment.
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