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试用厄瓦尔德图解来说明德拜衍射花样的形成。

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A Mysql instance is running on a dedicated server. Developers access the server from the same network subnet. Users access the database through an application that is running on a separate server in a DMZ. Which two will optimize the security of this setup?（）

A. Disabling connections from named pipes or socket files (depending on the operating system of the server)
B. Enabling and using SSL for connections to the Mysql database
C. Installing Mysql on the application server, and running the database and application on the same server
D. Starting the server with – bind- address=0.0.0.0 specified
E. Running the server with – skip-networking specified
F. Limiting logins to originate from the application server or the server's subnet'

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不良事件记录表应包括哪些内容？

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验算砌体结构房屋墙体高厚比是为了保证（）

A. 墙体的稳定性
B. 房屋的刚度
C. 墙体的承载力
D. 墙体的变形能力

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长沙铜官窑始创于唐代，兴于晚良，衰于五代，产品远销海外，其产品的特色有（）。

A. 釉上斗彩工艺
B. 釉下多彩工艺
C. 手绘青花
D. 模印贴花

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