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【单选题】
As is well known, the brain performs a very important _______, which controls the nerve system of the body.A.
motion
B.
action
C.
function
D.
fact
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【单选题】信号 f ( t ) 的傅里叶变换为 F (j w ) ,则 e j4 t f ( t -2) 的傅里叶变换为 __________。
A.
F (j w -4 ) e -2(j w - 4 )
B.
F [j( w -4 )] e -j2( w - 4 )
C.
F [j( w +4 )] e j2( w + 4 )
D.
F [j( w +4 )] e -j2( w + 4 )
【简答题】药物进行生物转化的主要场所是________,排泄的主要途径是________
【单选题】Which of the following is NOT true according to the passage?
A.
Bird wings have to support the bird.
B.
Bird wings must act as the bird's engine.
C.
Airplane's wings must act as the airplane's engine.
D.
Similar wing shapes in aircraft and birds produce similar flight capabilities.
【单选题】Which of the following is not true according to the passage?
A.
Bird wings have to support the bird.
B.
Bird wings must act as the bird's engine.
C.
Airplane's wings must act as the airplane's engine.
D.
Similar wing shapes in aircraft and birds produce similar flight capabilities.
【简答题】药物进行生物转化的主要场所是________。
【单选题】如图所示为函数f(x)=2cos(wx+j)(w>0，0≤j≤p)的部分图象，其中| |=5，f(0)=1，那么w和j的值分别为
A.
w= ，j =
B.
w= ，j =
C.
w= ，j =
D.
w=6，j =
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