SA控制面公共控制信息，例如广播消息、寻呼消息和随机接入响应消息调度时固定采用哪种RANK？（） A: RANK1＜br＞ B: RANK2＜br＞ C: RANK3＜br＞ D: RANK4＜br＞

已知矩阵A=[1 2 3;4 5 6;7 8 9],计算矩阵A的行列式及逆矩阵，应该调用什么函数指令？ A: det(A) inv(A) B: rank(A) inv(A) C: det(A) rank(A) D: eig(A) rank(A)

‎If A and B are m × n matrices then have the same rank, then the rank of AB must equal the rank of BA.‌‎‌

在Excel某一单元格输入“＝RANK（F4，＄F＄4：＄F＄10）”的含义是（　　）

以下语句错误的是() A: LECT rank, AVG(salary) FROM people HAVING AVG(salary) > 1000 GROUP BY rank; B: SELECT rank, AVG(salary) FROM people GROUP BY rank HAVING AVG(salary) > 1000 C: SELECT rank, AVG(salary) FROM people HAVING AVG(salary) > 1000 GROUP BY rank; D: SELECT AVG(salary) FROM people GROUP BY rank HAVING AVG(salary) > 1000; E: SELECT rank, AVG(salary) FROM people GROUP BY rank WHERE AVG(salary) > 1000;

Let A be an m×n matrix, then ( ). A: AAT =ATA. B: if rank(A) = m, then AT A is invertible. C: if rank(A) = n, then AAT is invertible. D: if rank(A) = n, then AT A is invertible.

The lowest naval officer rank is ______ , while the lowest army officer rank is ______ .(全部小写)

rank函数最常用的是求某一个数值在某一区域内的排名。rank函数语法形式:rank(number,ref,[order])，ref表示（

在ORACLE中，rank()函数和dense_rank()函数的差别是（选一项） A: rank函数和dense_rank函数都没有跳跃 B: rank函数和dense_rank函数都有跳跃 C: rank函数有跳跃 dense_rank函数没有跳跃 D: rank函数没有跳跃 dense_rank函数有跳跃

This is important to know because the person of lesser rank or authority should always be introduced to the person of higher rank or authority.