【单选题】【消耗次数：1】
设A和B皆为n阶实方阵，则下面论断错误的是()。
①
<SPANstyle="FONT-SIZE:10.5pt；FONT-FAMILY:宋体；mso-bidi-font-size:12.0pt；mso-font-kerning:1.0pt；mso-ansi-language:EN-US；mso-fareast-language:ZH-CN；mso-bidi-language:AR-SA；mso-ascii-font-family:TimesNewRoman；mso-hansi-font-family:TimesNewRoman；mso-bidi-font-family:TimesNewRoman">A与B</SPAN><SPANlang=EN-USstyle="FONT-SIZE:10.5pt；FONT-FAMILY:TimesNewRoman；mso-bidi-font-size:12.0pt；mso-fareast-font-family:宋体；mso-font-kerning:1.0pt；mso-ansi-language:EN-US；mso-fareast-language:ZH-CN；mso-bidi-language:AR-SA"><SPANstyle="POSITION:relative；TOP:2pt；mso-text-raise:-2.0pt"></SPAN></SPAN><SPANstyle="FONT-SIZE:10.5pt；FONT-FAMILY:宋体；mso-bidi-font-size:12.0pt；mso-font-kerning:1.0pt；mso-ansi-language:EN-US；mso-fareast-language:ZH-CN；mso-bidi-language:AR-SA；mso-ascii-font-family:TimesNewRoman；mso-hansi-font-family:TimesNewRoman；mso-bidi-font-family:TimesNewRoman">相似的充要条件是存在可逆阵P</SPAN><SPANstyle="FONT-SIZE:10.5pt；FONT-FAMILY:宋体；mso-bidi-font-size:12.0pt；mso-font-kerning:1.0pt；mso-ansi-language:EN-US；mso-fareast-language:ZH-CN；mso-bidi-language:AR-SA；mso-ascii-font-family:TimesNewRoman；mso-hansi-font-family:TimesNewRoman；mso-bidi-font-family:TimesNewRoman">，使得A=P<SUP>-1</SUP>BP</SPAN>
②
若A是反对称矩阵，则A<SUP>T</SUP>=-A</P>
③
若A可逆，则A可以表示成若干个初等矩阵的乘积
④
若A是正交矩阵，则|A|=1
参考答案：
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【单选题】
mso-ascii-font-family:Times New Romanmso-bidi-font-family:Times New Romanmso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">下列几组溶液具有缓冲作用的是宋体;mso-hansi-font-family:宋体;mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">( )
①
H2O——NaAc
②
HCl——NaCl
③
NaOH——Na2SO4
④
NaHCO3——Na2CO3
【单选题】
Calibri,sans-serif;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">SolidWorksmso-ascii-theme-font:minor-latin;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">的工程图文件由相对独立的两部分组成，即（minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA"> mso-ascii-theme-font:minor-latin;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">）和（minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA"> mso-ascii-theme-font:minor-latin;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">）。
①
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②
mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA>工程图模板和图纸格式
③
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【单选题】
宋体;mso-bidi-font-family:Times New Romanmso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">AgClmso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">在下列哪种溶液中（浓度均为1mol/L）溶解度最大？( )
①
NH3水
②
HCl
③
H2O
④
Na2SO4
【单选题】
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mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">相交剖视图中的箭头方向表示
①
应旋转后投影
②
不画其投影
③
不旋转直接投影
④
旋转后用虚线表示其投影
【单选题】
mso-bidi-font-family:宋体;mso-font-kerning:0pt;mso-ansi-language:EN-US;
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①
一个剖切平面
②
两个相交的剖切平面
③
两个剖切平面
④
几个平行的剖切平面
【单选题】
mso-bidi-font-family:Times New Romanmso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">下列物质中是弱电解质的是（）
①
NaAc
②
NH4Cl
③
KNO3
④
H2S
【判断题】
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①
正确
②
错误
【单选题】
mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;
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ZH-CN;mso-bidi-language:AR-SA">方案流程图font-family:宋体;mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;
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AR-SA">不包括的内容是
①
必要的尺寸标注
②
设备示意图
③
流程管线及流向箭头
④
必要文字注解
【简答题】
mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">化工设备的读图要求？
【判断题】
mso-ascii-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:
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①
正确
②
错误
【单选题】
mso-ascii-theme-font:minor-latin;mso-fareast-theme-font:minor-fareast;
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①
视图的轮廓线以外
②
剖切位置线的延长线上
③
视图轮廓线以内
④
按投影关系配置
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①
Credit Metrics模型
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KMV模型
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CreditRisk+模型
④
Credit Portfolio View模型