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【单选题】
在光线作用下能够使物体产生一定方向的电动势的现象叫做()。A.
电热效应
B.
外光电效应
C.
光电导效应
D.
光生伏特效应
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举一反三
【单选题】Passage 2 Some people believe that cigarette smoking is dangerous and should therefore be considered a health hazard . They want their governments to create anti-smoking programs. People differ as to ...
A.
jumping, running or climbing
B.
working, sleeping or resting
C.
using,smoking or eating
D.
washing,bathing or cleaning
【单选题】What have high．income countries done to smoking?
A.
Banned smoking in the public and reduced tobacco taxes．
B.
Banned public smoking and established tobacco taxes．
C.
Dropped smoking rates and banned smoking in public．
D.
Dropped smoking rates and lowered tobacco taxes．
【单选题】Where can a user find the System32 folder on a Windows Vista x64 system?（）
A.
C:///Windows/System32（x64）
B.
C:///Windows/System
C.
C:///Windows/System32
D.
C:///Windows（x64）/System32
【单选题】A Brief History of American Anti-Smoking Campaigns The First Anti-Smoking Treatise Tobacco is a native American plant that was first used as a smoking substance in the religious ceremonies of Indian m...
A.
Y
B.
N
C.
NG
【单选题】Passage 2 Some people believe that cigarette smoking is dangerous and should therefore be considered a health hazard . They want their governments to create anti-smoking programs. People differ as to ...
A.
for smoking
B.
neither for nor against smoking
C.
against smoking
D.
either for or against smoking
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