已知三阶矩阵$A$满足$\mid A-E\mid=\mid A-2E\mid=\mid A-3E\mid=0$,则$\mid A\mid$=( )。 A: $4$ B: $6$ C: $12$ D: $3$
已知三阶矩阵$A$满足$\mid A-E\mid=\mid A-2E\mid=\mid A-3E\mid=0$,则$\mid A\mid$=( )。 A: $4$ B: $6$ C: $12$ D: $3$
设$A,B$是$n$阶正交矩阵,且$\mid A\mid=-\mid B\mid$,则( ). A: $A+B$可逆 B: $A+B$不可逆 C: $\mid A+B\mid=1$ D: $\mid A+B\mid=-1$
设$A,B$是$n$阶正交矩阵,且$\mid A\mid=-\mid B\mid$,则( ). A: $A+B$可逆 B: $A+B$不可逆 C: $\mid A+B\mid=1$ D: $\mid A+B\mid=-1$
West Lake is located in the west of Hangzhou, _______.
West Lake is located in the west of Hangzhou, _______.
The Great Gatsby is considered by many as a tale of [u] [/u] in the 1920s. A: Long Island B: New York C: Chicago D: Mid-West
The Great Gatsby is considered by many as a tale of [u] [/u] in the 1920s. A: Long Island B: New York C: Chicago D: Mid-West
Excel2010从18份身份证号中获取出生日期可以使用()函数。 A: MID(A1,6,8) B: MID(A1,7,8) C: =MID(A1,6,8) D: =MID(A1,7,8)
Excel2010从18份身份证号中获取出生日期可以使用()函数。 A: MID(A1,6,8) B: MID(A1,7,8) C: =MID(A1,6,8) D: =MID(A1,7,8)
船舶电台海上移动业务识别码的组成是( )。 A: MID X1X2X3X4X5X6 B: 0 MID X1X2X3X4X5 C: 00 MID X1X2X3X4 D: 00 MID X1X2X3X4X5
船舶电台海上移动业务识别码的组成是( )。 A: MID X1X2X3X4X5X6 B: 0 MID X1X2X3X4X5 C: 00 MID X1X2X3X4 D: 00 MID X1X2X3X4X5
如果A1单元格中有某人的身份证号,如何提取他的出生年月日 A: mid(A1,7,4) B: mid(A1,4,7) C: mid(A1,7,8) D: mid(A1,8,7)
如果A1单元格中有某人的身份证号,如何提取他的出生年月日 A: mid(A1,7,4) B: mid(A1,4,7) C: mid(A1,7,8) D: mid(A1,8,7)
表达“东西南北”四个方位时,英语的习惯一般是______? A: north, east, south and west B: east, west, north and south C: north, south, east and west D: east, south, west and north
表达“东西南北”四个方位时,英语的习惯一般是______? A: north, east, south and west B: east, west, north and south C: north, south, east and west D: east, south, west and north
从A1单元格里的18位身份证号提取8位生日信息的准确公式是:()。 A: mid(A1,7,8) B: mid(A1,8,7) C: mid(A1,6,8) D: mid(A1,8,6)
从A1单元格里的18位身份证号提取8位生日信息的准确公式是:()。 A: mid(A1,7,8) B: mid(A1,8,7) C: mid(A1,6,8) D: mid(A1,8,6)
Because many West Germans fled to the East, the West Germany government built the Berlin Wall.( )
Because many West Germans fled to the East, the West Germany government built the Berlin Wall.( )