计算题：配制1000kg6.2%的盐酸酸洗锅炉，需要31%的工业盐酸多少kg？水多少kg？
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气象灾害预警信息内容包括（）等。
A. 气象灾害的类别
B. 预警级别
C. 起始时间
D. 可能影响范围
E. 警示事项
F. 应采取的措施
G. 发布机关
How many subnets can be gained by subnetting 172.17.32.0/23 into a /27 mask, and how many usable host addresses will there be per subnet?（）
A. 8 subnets, 31 hosts
B. 8 subnets, 32 hosts
C. 16 subnets, 30 hosts
D. 16 subnets, 32 hosts
E. A Class B address can't be subnetted into the fourth octet.
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