The attention to detail assures you that the setting and service are as perfect as yo
第4题
As used in the last sentence, the phrase "in short" means ______.
A.in the long run
B.in detail
C.in a word
D.in the end
第5题
The author's attitude towards the hippie movement is one of
A. criticism.
B. sympathy.
C. detestation.
D. enthusiasm.
第6题
A.det(AB)=0,则4=O,或B=O
B.det(AB)=0,则detA=0,或detB=0
C.AB=O,则4=0,或B=O
D.AB≠O,则detA≠0,或detB≠0
第7题
According to the third paragraph, ______.
A.the volume of the side section of the brain determines the human character
B.the front section of the brain controls function of eating
C.the front section of the brain does not contract with age
D.human can live without intellectual or emotional functions
第8题
在定理2.3.3(3)中,当det A=一1,n为奇数时,用不同于定理2.3.3(3)中的方法,而采用例2.3.2中的方法证明:
.并说明当n为偶数时,上述方法失效.
第9题
Dr. Bruce McEwen of Rockefeller University believes that ______.
A.a person's memory is determined by the level of hormones in his body
B.stress hormones have lasting positive effects on the brain
C.short bursts of stress hormones enhance memory function
D.a person's memory improves with continued experience of stress
第10题
In dealing with today's viruses, the author suggests that
A.we count on our automated virus detection tools ______.
B.we use our intuition
C.we make strict rules
D.we not send our machines to a service technician for repair
第11题
A.det(A)=78
B.rank(A)=3
C.trace(A)=13
D.[V,D]=eig(A )表示求矩阵A的全部特征值,构成对角矩阵D;求A的特征向量构成列向量V