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【单选题】
有 A 和 B 两种单质晶体,我们知道 A 的晶格常数是 4Å ,带隙是 1.2eV , B 的晶格常数是 5Å ,其带隙有可能是 _ __ _ _eV 。A.
2.1
B.
1
C.
1.2
D.
以上都不可能
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举一反三
【单选题】Which of the following statements is NOT related to light pollution?
A.
A haze of light is formed from artificial lights such as streetlights and building lights.
B.
Lights from different sources in the city stream into space and illuminate the night sky.
C.
The night sky is illuminated by the lights from big glowing cities in the night.
D.
Stargazing becomes difficult because there is a layer of haze in the air.
【简答题】吴荪甫是茅盾小说《 __ 》中的人物。
【单选题】Put some and chicken on the sandwich.
A.
lettuce; slice
B.
lettuces; slices
C.
lettuce; slices
D.
lettuces; slice
【单选题】8, The major concern of ______ fiction lies in the tracing of the psychological development of his characters and in his energetic criticism of the dehumanizing effect of the capitalist industrializa...
A.
D.H.Lawrence's
B.
J.Galsworthy's
C.
W.Thackeray’s
D.
T.Hardy’s
【简答题】第11章6. A major concern for the viability of current alternative fuels is the _____ needed to produce the required materials.A. waterB. energyC. productsD. cropland7. According to the writer of this pa...
【单选题】（单选）阳台护栏其净高应高于人体的重心，不宜（ ），也不应（ ）。
A.
小于1.05m，超过1.2m
B.
大于1.05m，超过1.2m
C.
小于1.2m，超过1.05m
D.
大于1.2m，少于1.05m
【单选题】移动 APP 测试环境及手段, 通常要求的是: ( ) *本题实为多选题① 要求为β（beta）测试环境② 要求为α（alpha）测试环境③ 移动设备的O.S自身提供的测试环境④ 要求能应用自动化测试的技术手段A．① ②B．① ③ ④C．① ② ③ D．① ② ③ ④
A.
A
B.
B
C.
C
D.
D
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