![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
Mr.Henderson was determined to remain ().He neither stood on his wife's side nor on his mother's side.
A.natural
B.neutral
C.nervous
D.native
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.natural
B.neutral
C.nervous
D.native
A.def file_path(selt,request,response=None,into=None):
B.def completed(self,results,item,info):
C.det item_completed(self,results,item,into);:
D.det get_media_requests(self,item,info):
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
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
设A.B均为n阶矩阵,则下列正确的为()。
A.det(A+B)=detA+detB
B.AB=BA
C.det(AB)=det(AB)
D.(A-B)2=A2-2AB+B2
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
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
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
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