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【判断题】
换流站中,在输电系统的送端将直流电转换为交流电,此过程称为逆变。A.
正确
B.
错误
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【简答题】阅读理解。 Microwaves may be great at warming up food, but what about warming people? Using microwaves to directly heat owners of a room would save much of the energy wasted by heating walls and furniture....
【单选题】One of the ________ of our planet’s warming up is an increase in the number of natural disasters.
A.
consequences
B.
reasons
C.
causes
D.
Processes
【单选题】After the warmingup exercises, the teacher told us ________way of long jump and gave us________example.
A.
the；a
B.
/；an
C.
the；an
D.
a；a
【简答题】They returned my keys to me. Someone (pick) ______ them up in the street.
【简答题】Keys to warming up exercise
【简答题】阅读理解。 Microwaves may be great at warming up food, but what about warming people? Using microwaves to directly heat owners of a room would save much of the energy wasted by heating walls and furniture....
【简答题】Microwaves may be great at warming up food, but what about warming people? Using microwaves to directly heat owners of a room would save much of the energy wasted by heating walls and furn iture. And ...
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