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【单选题】
胆固醇是下列哪种维生素的前体()。
A.
维生素A
B.
维生素B
C.
维生素D
D.
维生素E
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参考答案:
举一反三
【单选题】进行变压器耐压试验时,试验电压升到要求数值后,应保持( ),无放电或击穿现象为试验合格。
A.
30s
B.
60s
C.
90s
D.
120s
【单选题】抗震框架梁纵向钢筋构造中端支座处钢筋构造是伸至柱边下弯,请问弯折长度是
A.
梁高-保护层
B.
12d
C.
梁高-保护层 х 2
D.
15d
【单选题】进行变压器耐压试验时,试验电压升到要求数值后,应保持( )秒钟,无放电或击穿现象为试验合格。
A.
30
B.
60
C.
90
D.
120
【简答题】Brighton is in the county of East Sus, on the South coast of England. Situated between the English Channel and the South Downs, Brighton is 90 km from London. Brighton's nearby neighbor, Hove, is s...
【简答题】We can generate electricity ___ burning fossil fuels.A. for B. with C. to D. by
【单选题】We can generate electricity ________ burning fossil fuels.
A.
for
B.
with
C.
to
D.
by
【单选题】We can generate electricity ___________ burning fossil fuels.
A.
with
B.
to
C.
by
D.
for
【简答题】Brighton is in the county of East Sus, on the South coast of England. Situated between the English Channel and the South Downs, Brighton is 90 km from London. Brighton’s nearby neighbor, Hove, is s...
【简答题】健康促进案例:凉山彝族地区促进住院分娩实践.docx 请阅读附件中的健康促进案例,并按照健康促进的5个活动领域来论述该项目所实施的活动。
【单选题】What can we learn about the technology invented by Nur Energy?
A.
It will generate intenser solar energy.
B.
It will supply two million homes in Europe.
C.
It can generate energy even when there is no sunshine.
D.
It may start sending power to energy-hungry Western Europe.
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