塔厂严禁采购（）。对2013年1月1日以后制作安装的铁塔再次出现此类情形，考核塔厂5000元/次，考核监理1000元/次。
A. 没有负公差的钢材
B. 小于铁塔设计文件规定的钢材规格型号（不含正常负公差）
C. 马钢、首钢的钢材
D. 钢材必须是规定的品牌
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南京理工大学现已建成一所以（）为主、多学科协调发展的高等学府。
A. 工
B. 农
C. 理
D. 商
You create a server control that inherits from WebControl. You need to enable the server control to emit markup for a new kind of mobile device. You must not alter the code in the server controls. Which two actions should you perform?（）
A. Create a class that inherits HtmlTextWriter and that can emit the new markup.
B. Create a class that inherits StreamWriter and that can emit the new markup.
C. Reference the class in the element of the new device's browser definition file.
D. Reference the class in the element of the new device's browser definition file.
A negative metacentric height（）.
A. will always cause a vessel to capsize
B. should always be immediately corrected
C. always results from off-center weights
D. All of the above are correct
管理层次可分为三个层次（）。
A. 领导层
B. 决策层
C. 中间层
D. 协调层
E. 操作层
F. 执行层
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