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【单选题】
关于孤立肾的影像表现,下列哪项是错误的A.
X线平片可见一侧肾影缺如,对侧肾影相对较大
B.
MRI表现为缺如侧肾床无正常肾脏信号
C.
CT平扫左侧肾床内无肾影显示,右侧肾影不大,左侧胸腔内有一肾脏外形的阴影
D.
USG示一侧肾区查不到肾声像图,对侧肾代偿性增大
E.
排泄性尿路造影缺如侧无肾及肾盂显示
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【简答题】当代教育发展的趋势和特点有哪些?
【简答题】绝望的;孤注一掷的(a.):_____________________________
【单选题】The Fed is an active participant in money markets mainly because of its responsibility to
A.
lower borrowing costs to encourage capital investment.
B.
control the money supply.
C.
increase the interest income of retirees holding money market instruments.
D.
assist the Securities and Exchange Commission in regulating the behavior of other money market participants.
【单选题】The Fed is an active participant in money markets mainly because of its responsibility to _________
A.
lower borrowing costs to encourage capital investment.
B.
control the money supply.
C.
increase the interest income of retirees holding money market instruments.
D.
assist the Securities and Exchange Commission in regulating the behavior other money market participants.
【单选题】The company also embarked on a (desperate) cost cutting program...
A.
绝望的；孤注一掷的；极需要的
B.
荒凉的
C.
缺乏的
【简答题】Figure out how each concluding paragraph ends. Choose the proper method.
【判断题】方波信号通过傅里叶级数投影到三角函数集上，有如下展开公式：x(t)=(4*A/pi) * [ sin(2*pi*f*t) + (1/3)*sin(2*pi*3*f*t) + (1/5)*sin(2*pi*5*f*t) +............]因此，我们可以用１,３,５,７,９．．．．次正弦波谐波来合成出方波信号。
A.
正确
B.
错误
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