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【简答题】
太阳能光电灯是近几年出现的一种高科技产品,主要由太阳能电池和电灯构成.这两部分的作用主要是:白天,太阳能电池将 能转化为电能;夜晚,太阳能电池给电灯供电将电能转化为 能.
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皮皮学刷刷变学霸
举一反三
【单选题】physical dependence on certain substances results from ______.
A.
uncontrolled consumption of them over long periods of time
B.
exclusive use of them for social purposes
C.
quantitative application of them to the treatment of diseases
D.
careless employment of them for unpleasant symptoms
【单选题】The price of the car is _____ of the three. [ ]
A.
the biggest
B.
most
C.
the highest
【单选题】Inflation will reach its highest in a decade across most of Asia this year, threatening to______ recent productivity gains.
A.
reverse
B.
reserve
C.
retrieve
D.
revise
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