【单选题】【消耗次数:1】
设<imgwidth="18"height="18"v:shapes="_x0000_i1106"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image130.png">是<imgwidth="44"height="16"v:shapes="_x0000_i1107"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image132.png">矩阵,则齐次线性方程<imgwidth="54"height="20"v:shapes="_x0000_i1108"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image134.png">仅有零解的充分必要条件是()
<imgwidth="18"height="18"v:shapes="_x0000_i1109"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image130.png">的行向量组线性无关
<imgwidth="18"height="18"v:shapes="_x0000_i1110"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image130.png">的行向量组线性相关
<imgwidth="18"height="18"v:shapes="_x0000_i1111"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image130.png">的列向量组线性无关
<imgwidth="18"height="18"v:shapes="_x0000_i1112"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image130.png">的列向量组线性相关
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相关题目
【单选题】 已知<imgwidth="18"height="18"v:shapes="_x0000_i1285"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">是<imgwidth="14"height="16"v:shapes="_x0000_i1286"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image264.png">阶方阵,且<imgwidth="70"height="28"v:shapes="_x0000_i1287"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image305.png">,则<imgwidth="18"height="18"v:shapes="_x0000_i1288"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">的<imgwidth="14"height="16"v:shapes="_x0000_i1289"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image264.png">个行向量中()
①  任意<imgwidth="14"height="14"v:shapes="_x0000_i1290"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image362.png">个行向量线性无关
②  必有<imgwidth="14"height="14"v:shapes="_x0000_i1291"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image362.png">个行向量线性无关
③  任一行向量都可由其余<imgwidth="36"height="18"v:shapes="_x0000_i1292"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image364.png">个行向量线性表出
④  任意<imgwidth="14"height="14"v:shapes="_x0000_i1293"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image362.png">个行向量都为极大无关组
【单选题】 若<imgwidth="18"height="18"v:shapes="_x0000_i1305"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">是<imgwidth="34"height="18"v:shapes="_x0000_i1306"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image380.png">矩阵,<imgwidth="54"height="20"v:shapes="_x0000_i1307"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">是<imgwidth="54"height="20"v:shapes="_x0000_i1308"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image331.png">的导出组,则()
①  若<imgwidth="54"height="20"v:shapes="_x0000_i1309"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image331.png">有无穷多个解,则<imgwidth="54"height="20"v:shapes="_x0000_i1310"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">仅有零解
②  <imgwidth="54"height="20"v:shapes="_x0000_i1311"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">仅有零解,则<imgwidth="54"height="20"v:shapes="_x0000_i1312"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image331.png">有唯一解
③  若<imgwidth="54"height="20"v:shapes="_x0000_i1313"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image331.png">有无穷多个解,则<imgwidth="54"height="20"v:shapes="_x0000_i1314"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">有非零解
④  <imgwidth="54"height="20"v:shapes="_x0000_i1315"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">有非零解,则<imgwidth="54"height="20"v:shapes="_x0000_i1316"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image331.png">有无穷多个解
【单选题】 已知向量<imgwidth="288"height="114"v:shapes="_x0000_i1294"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image366.png">,若<imgwidth="18"height="22"v:shapes="_x0000_i1295"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image368.png">可由<imgwidth="70"height="26"v:shapes="_x0000_i1296"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image279.png">线性表出那么()
①  <imgwidth="45"height="22"v:shapes="_x0000_i1297"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image371.png">,<imgwidth="49"height="22"v:shapes="_x0000_i1298"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image373.png">
②  <imgwidth="45"height="22"v:shapes="_x0000_i1299"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image371.png">,<imgwidth="49"height="22"v:shapes="_x0000_i1300"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image373.png">
③  <imgwidth="45"height="22"v:shapes="_x0000_i1301"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image375.png">,<imgwidth="49"height="22"v:shapes="_x0000_i1302"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image373.png">
④  <imgwidth="45"height="22"v:shapes="_x0000_i1303"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image371.png">,<imgwidth="49"height="22"v:shapes="_x0000_i1304"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image377.png">
【单选题】 设有<imgwidth="22"height="22"v:shapes="_x0000_i1198"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image242.png">中两组基<imgwidth="70"height="26"v:shapes="_x0000_i1199"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image226.png">和<imgwidth="70"height="26"v:shapes="_x0000_i1200"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image244.png">,已知<imgwidth="206"height="28"v:shapes="_x0000_i1201"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image246.png"><imgwidth="70"height="28"v:shapes="_x0000_i1202"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image248.png">;<imgwidth="270"height="28"v:shapes="_x0000_i1203"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image250.png">,则从基<imgwidth="70"height="26"v:shapes="_x0000_i1204"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image226.png">到基<imgwidth="70"height="26"v:shapes="_x0000_i1205"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image244.png">的过渡矩阵为()
①  <imgwidth="102"height="84"v:shapes="_x0000_i1206"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image252.png">
②  <imgwidth="102"height="84"v:shapes="_x0000_i1207"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image254.png">
③  <imgwidth="112"height="84"v:shapes="_x0000_i1208"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image256.png">
④  <imgwidth="110"height="84"v:shapes="_x0000_i1209"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image258.png">
【单选题】 已知<imgwidth="66"height="84"v:shapes="_x0000_i1256"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image318.png">和<imgwidth="80"height="84"v:shapes="_x0000_i1257"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image320.png">是线性方程组<imgwidth="54"height="20"v:shapes="_x0000_i1258"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image297.png">的两个解,则系数矩阵<imgwidth="18"height="18"v:shapes="_x0000_i1259"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image260.png">是()
①  <imgwidth="102"height="84"v:shapes="_x0000_i1260"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image323.png">
②  <imgwidth="96"height="58"v:shapes="_x0000_i1261"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image325.png">
③  <imgwidth="96"height="58"v:shapes="_x0000_i1262"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image327.png">
④  <imgwidth="106"height="84"v:shapes="_x0000_i1263"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image329.png">
【单选题】 已知<imgwidth="202"height="24"v:shapes="_x0000_i1076"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image084.png">,且有<imgwidth="134"height="24"v:shapes="_x0000_i1077"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image086.png">,则()
①  <imgwidth="138"height="46"v:shapes="_x0000_i1078"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image088.png">
②  <imgwidth="128"height="46"v:shapes="_x0000_i1079"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image090.png">
③  <imgwidth="128"height="46"v:shapes="_x0000_i1080"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image092.png">
④  <imgwidth="150"height="46"v:shapes="_x0000_i1081"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image094.png">
【单选题】 已知<imgwidth="138"height="26"v:shapes="_x0000_i1327"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image398.png">,则<imgwidth="70"height="24"v:shapes="_x0000_i1328"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image400.png">为()
①  <imgwidth="96"height="26"v:shapes="_x0000_i1329"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image402.png">
②  <imgwidth="98"height="26"v:shapes="_x0000_i1330"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image404.png">
③  <imgwidth="126"height="26"v:shapes="_x0000_i1331"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image406.png">
④  <imgwidth="166"height="28"v:shapes="_x0000_i1332"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image408.png">
【单选题】 向量组<imgwidth="124"height="28"v:shapes="_x0000_i1096"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image122.png">和向量组<imgwidth="132"height="28"v:shapes="_x0000_i1097"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image124.png">等价的定义是向量组()
①  <imgwidth="26"height="28"v:shapes="_x0000_i1098"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">和<imgwidth="34"height="28"v:shapes="_x0000_i1099"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image128.png">可互相线性表出
②  <imgwidth="26"height="28"v:shapes="_x0000_i1100"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">和<imgwidth="34"height="28"v:shapes="_x0000_i1101"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image128.png">中有一组可由另一组线性表出
③  <imgwidth="26"height="28"v:shapes="_x0000_i1102"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">和<imgwidth="34"height="28"v:shapes="_x0000_i1103"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image128.png">中所含向量的个数相等
④  <imgwidth="26"height="28"v:shapes="_x0000_i1104"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">和<imgwidth="34"height="28"v:shapes="_x0000_i1105"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image128.png">的秩相等
【单选题】 齐次线性方程组<imgwidth="60"height="20"v:shapes="_x0000_i1362"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image448.png">,其中<imgwidth="18"height="18"v:shapes="_x0000_i1363"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image110.png">是<imgwidth="38"height="20"v:shapes="_x0000_i1364"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image451.png">的矩阵,<imgwidth="22"height="18"v:shapes="_x0000_i1365"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image453.png">是<imgwidth="36"height="18"v:shapes="_x0000_i1366"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image455.png">的列向量则()
①  仅有零解
②  必有非零解
③  无解
④  可能有非零解
【单选题】 设向量组<imgwidth="126"height="28"v:shapes="_x0000_i1113"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image136.png">的秩为<imgwidth="14"height="14"v:shapes="_x0000_i1114"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image138.png">,且<imgwidth="46"height="16"v:shapes="_x0000_i1115"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image140.png">,则以下结论中正确的是()
①  <imgwidth="26"height="28"v:shapes="_x0000_i1116"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">中必有<imgwidth="14"height="14"v:shapes="_x0000_i1117"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image138.png">个向量线性无关,且<imgwidth="26"height="28"v:shapes="_x0000_i1118"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">中任意<imgwidth="36"height="18"v:shapes="_x0000_i1119"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image142.png">个向量都线性相关
②  <imgwidth="26"height="28"v:shapes="_x0000_i1120"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">中任意<imgwidth="14"height="14"v:shapes="_x0000_i1121"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image138.png">个向量都线性相关
③  <imgwidth="26"height="28"v:shapes="_x0000_i1122"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">中任意<imgwidth="14"height="14"v:shapes="_x0000_i1123"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image138.png">个向量都是<imgwidth="26"height="28"v:shapes="_x0000_i1124"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image126.png">的最大无关组
④  <imgwidth="26"height="28"v:shapes="_x0000_i1125"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image143.png">中任意一个向量都可由该组中其他任意<imgwidth="14"height="14"v:shapes="_x0000_i1126"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image144.png">个向量线性表示
随机题目
【单选题】 ( )是由高硬度和高熔点的金属碳化物和金属黏结剂用粉末冶金工艺制成。
①  硬质合金
②  工具钢
③  高速钢
【单选题】 ( )是指在切削塑性材料时,由于切屑与前刀面之间的压力很大,再加上几百摄氏度的高温,使切屑底部与前刀面发生黏结。
①  冷焊
②  黏结
③  滑动
【单选题】 ( )是工件被切削层在刀具切削刃和前刀面的挤压作用下而产生以滑移为主的塑性变形过程。
①  金属切削
②  数控切削
③  机械切削
【判断题】 Ff是切削合力F在主运动方向上的分力,该说法( )
①  正确
②  错误
【单选题】 ( )是指切削刃发生小块碎裂或大块断裂,刀具不能继续进行切削。
①  碎断
②  崩刃
③  脆性磨损
【单选题】 任何一个物体,如果对其不加限制,那么,它在空间的位置是不确定的,可以向任意方向移动或转动,该说法( )
①  正确
②  错误
【单选题】 ( )是以工件外圆柱面的中心线为定位基准,而夹具定位元件仍与工件外圆柱面保持接触,将其中心线确定在要求的位置上。
①  定心定位
②  V形块定位
③  支撑定位
【单选题】 夹紧力的方向应与工件刚度高的方向一致,以利于减少工件的变形,该说法( )
①  正确
②  错误
【判断题】 钻床夹具因大都具有刀具导向装置钻模板和钻套,故习惯上又称为钻模,该说法( )
①  正确
②  错误
【单选题】 加工中,在切削力较大的情况下,分度对定机构对定后,尚需锁紧,该说法( )
①  正确
②  错误