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【简答题】
升降压斩波电路和Cuk斩波电路具有相同的电压输入输出关系,不同的是:( )的负载电流和电源电流均是连续的,( )的负载电流和电源电流均是断续的。
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皮皮学刷刷变学霸
举一反三
【单选题】As a result of the Industrial Revolution, Britain became the ____.
A.
“shop of the world”
B.
“workshop of the world”
C.
“centre of the world”
D.
“leader of the world”
【简答题】如何解压，轻松解压的方法有哪些？
【单选题】Tea became a popular drink in Britain ______.
A.
in eighteenth century
B.
in sixteenth century
C.
in seventeenth century
D.
in the late seventeenth century
【单选题】In Britain, etiquette became a universal force in
A.
the seventeenth century
B.
the eighteenth century
C.
the nineteenth century
D.
the fifteenth century
【单选题】Tea became a popular drink in Britain ( ) .
A.
in the eighteenth century
B.
in the sixteenth century
C.
in the seventeenth century
D.
in the late seventeenth century
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