关于中英文对照,下列说法错误的是( ) A: 矩阵-Matrix B: 像素-Pixel C: 字节-bit D: 字节-byte E: 点-dot

LED数码管常见的类型有（ ）。 A: 字段式 Field style B: 点式Point type C: 点阵式Dot matrix D: 光柱式Light column

After excuting the statement "[X,D]=eig(A)", D is（ ）. A: a scalar matrix B: an identity matrix C: a triangular matrix D: a diagonal matrix

带ABS的制动系，可采用哪种规格的制动液（ ）。 A: DOT　1 B: DOT　2 C: DOT　3 D: DOT 4

关于相对导数与绝对导数的关系，正确的是_____。 A: $\dot r = \tilde{\dot r}$ B: $\left| {{\bf{\dot r}}} \right| = \left| {{\bf{\tilde{ \dot r}}}} \right|$ C: ${\bf{\dot r}} = {\bf{\tilde{ \dot r}}}$ D: 以上都不正确

If A is a matrix, the function max(A(:)) is ( ). A: to return the first element B: to return the maximum element in each row of the matrix C: to return the maximum element in each column of the matrix D: to return the largest element of the entire matrix

Dot

14 In triple sequence table of sparse matrix, each triple represents ( ). A: the row number,column number and data value of non-zero elements in the matrix B: the data value of non-zero elements in the matrix C: the row and column numbers of elements in the matrix D: the row number,column number and data value of elements in the matrix

Let A be a 4 by 3 matrix, and r(A)=2, and B is an invertible matrix, then r(AB)=______

If A is a matrix, the function of the function max(a(:)) is ( ). A: to work out the maximum element of the entire matrix B: function call errors C: to work out the maximum element of each row of the matrix D: to work out the maximum element of each column of the matrix