设A,B,C,D是4个四阶矩阵,其中A≠O,|B|≠0,|C|≠0,D≠O,且满足ABCD=O,若r(A)+r(B)+r(C)+r(D)=r,则r的取值范围是()
A. r<10.
B. 10≤r≤12.
C. 12<r<16.
D. 10≤r<16.
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个体对特定对象以一定方式作出反应时所持有的评价性的、较稳定的内部心理倾向,这是指
A. 动机
B. 需要
C. 价值观
D. 态度
E. 知觉
A: Congratulations! I hope you'll be very happy.B: ().
A. Thanks, the same to you.
B. Thanks, I'm sure we will.
C. Yes, that's for sure.
D. Yes. I am sure we'll be the happiest couple in the world.
With most online recruitment services, jobseekers must choose their words carefully; ______ the search engine will never make the correct match.
A. therefore
B. whereas
C. provided
D. otherwise
沟通过程由7个因素构成,分别是信息源、信息、通道、信息接受者、障碍、背景以及
A. 交流
B. 传递
C. 传达
D. 反馈
E. 接受