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MP3随身听以其独特的魅力成为年轻人的时尚，若MP3正常工作时的功率为0.01W，则连续播放100S，消耗的电能为_______J；它允许使用充电电池，在电池充电的过程中，是将______转化为化学能，此时电池相当于___________（电源、用电器）。
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举一反三
【简答题】As you have probably noticed, some students are more successful than others when taking such an examination. Often the more successful students are better prepared. However, sometimes students who do ...
【简答题】Some men have been virtuous blindly, others have speculated fantastically, and others have been shrewd to bad purposes. (拆译法)
【单选题】It’s not polite to make fun of others when they are in trouble .
A.
have fun
B.
enjoy fun
C.
laugh at
D.
look for fun
【单选题】Society _______ a variety of people; some are good, others bad, and still others in between.
A.
is consisted of
B.
is made up of
C.
consisted of
D.
make up of
【单选题】How can you expect others to believe you when you ___ constantly ___ lies! [ ]
A.
have; told
B.
had; told
C.
are; telling
D.
were; telling
【单选题】It was ________ of my secretary not to have let others disturb me this morning when I was occupied with my work.
A.
generous
B.
polite
C.
considerate
D.
sympathetic
【单选题】It is easy to criticize others when you have the benefit of ________.
A.
hindsight
B.
highlight
C.
insight
D.
foresight
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