What has Michael got in the math mid-exam?

每5分钟运行一次crond任务exam,下面哪项正确？ A: */i2****exam B: 5/* * * * * exam C: * **/12** exam D: */5 * * * * exam

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: $3$

I had been preparing for the exam for a year and now I‍ was raring to go.‍ A: was nervous about the exam B: was confident about the exam C: was anxious about the exam D: was eager to take the exam

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: $\mid A+B\mid=-1$

Only when you have acquired a good knowledge of the field, . A: you can pass the exam B: you passed the exam C: can you pass the exam D: you will pass the exam

若有以下结构体定义，则正确的引用或定义是_______________。struct exam{ int x;int y; }; A: exam x=10; B: exam y,x; C: struct exam y={10}; D: struct exam a; a.x=10;

Divide “exam” into syllables: A: ex-am B: exam C: e-xam D: exa-m

What can we conclude from the talk(). A: The exam was difficult for the woman. B: The woman finished the exam in one hour. C: The woman thought the exam easy.

If I fail ______ the exam on the first attempt, can I take the exam again? (pass)