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【简答题】
平面向量也叫二维向量，二维向量的坐标表示及其运算可以推广到n(n≥3)维向量，n维向量可用(x 1 ，x 2 ，x 3 ，x 4 ，…，x n )表示．设 ＝(a 1 ，a 2 ，a 3 ，a 4 ，…，a n )， ＝(b 1 ，b 2 ，b 3 ，b 4 ，…，b n )，规定向量 与 夹角θ的余弦为cosθ＝ .已知n维向量 ， ，当 ＝(1,1,1,1，…，1)， ＝(－1，－1,1,1,1，…，1)时，cosθ等于______________
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参考答案：
举一反三
【简答题】Gerald Knowles
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【简答题】听力原文： Acupuncture is very much a holistic system, taking into account the whole of person. Thus a person is not just a physical entity, but also a mental or emotional entity, even their spiritual side...
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【简答题】According to Gerald Corbett, British railway is structured [A] for the benefit of commuters. [B] to the advantage of the government. [C] for the effect of better coordination. [ D] as a replacement of...
查看完整题目与答案
【单选题】--- Good morning, class! --- !
A.
Hello
B.
Good morning, Li Lei
C.
Good morning, Mr. Xiong
D.
Thank you
查看完整题目与答案
【单选题】The word 'holistic' (Para. 3) means
A.
holy
B.
hostile
C.
whole
D.
unholy
查看完整题目与答案
【单选题】According to Gerald Corbett, British railway is structured
A.
for the benefit of commuters.
B.
to the advantage of the government.
C.
for the effect of better coordination.
D.
as a replacement of the private system.
查看完整题目与答案
【单选题】Gerald Holton is a ______.
A.
Cambridge University philosopher
B.
Harvard University philosopher
C.
Stanford University philosopher
D.
philosopher of the University of Virginia
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【单选题】急性心肌损伤后，哪种标志物最早会恢复至正常水平
A.
CK—MB
B.
Mb
C.
LDl
D.
CTn
E.
AST
查看完整题目与答案
【单选题】holistic
A.
病理的
B.
整体的
C.
活性的
D.
附属的
查看完整题目与答案
【单选题】He is a manager in a big company that manuf▁tures car parts.
A.
ac
B.
as
C.
ca
D.
sa
查看完整题目与答案
相关题目：
【简答题】Gerald Knowles
查看完整题目与答案
【简答题】听力原文： Acupuncture is very much a holistic system, taking into account the whole of person. Thus a person is not just a physical entity, but also a mental or emotional entity, even their spiritual side...
查看完整题目与答案
【简答题】According to Gerald Corbett, British railway is structured [A] for the benefit of commuters. [B] to the advantage of the government. [C] for the effect of better coordination. [ D] as a replacement of...
查看完整题目与答案
【单选题】--- Good morning, class! --- !
A.
Hello
B.
Good morning, Li Lei
C.
Good morning, Mr. Xiong
D.
Thank you
查看完整题目与答案
【单选题】The word 'holistic' (Para. 3) means
A.
holy
B.
hostile
C.
whole
D.
unholy
查看完整题目与答案
【单选题】According to Gerald Corbett, British railway is structured
A.
for the benefit of commuters.
B.
to the advantage of the government.
C.
for the effect of better coordination.
D.
as a replacement of the private system.
查看完整题目与答案
【单选题】Gerald Holton is a ______.
A.
Cambridge University philosopher
B.
Harvard University philosopher
C.
Stanford University philosopher
D.
philosopher of the University of Virginia
查看完整题目与答案
【单选题】急性心肌损伤后，哪种标志物最早会恢复至正常水平
A.
CK—MB
B.
Mb
C.
LDl
D.
CTn
E.
AST
查看完整题目与答案
【单选题】holistic
A.
病理的
B.
整体的
C.
活性的
D.
附属的
查看完整题目与答案
【单选题】He is a manager in a big company that manuf▁tures car parts.
A.
ac
B.
as
C.
ca
D.
sa
查看完整题目与答案
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