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【单选题】
原理图文件的文件后缀是什么A.
SchDoc
B.
SchLib
C.
PCBDoc
D.
PCBLib
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】Match the corresponding meaning. Jack is a boy from USS. He says : 1.I need a pair of pants ! what does he mean? 2.I need a bag of chips! what does he mean?
【简答题】阅读理解。 'All work and no play makes Jack a dull boy.' is a popular saying in the USA. We need to rest as we need to work. Without enjoying recreation (娱乐) we can't keep ourselves in good health and high...
【单选题】The boy is very thirsty. He ______ some water. [ ]
A.
is needing
B.
do need
C.
needs
D.
need
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【简答题】图示电路中，A、B点的电压为UAB =_____________V。【图片】
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