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【多选题】
以下有关磁场对通电直导体的作用，说法正确的有（）。
A.
磁场越强，直导体所受的小
B.
磁场越弱，直导体所受的小
C.
直导体通过的电流越大，其所受的越大
D.
直导体通过的电流越小，其所受的越大
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【单选题】左视图中,离正视图较近的一侧反应物体的方位是:
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右方
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【单选题】听力原文： The guitar's different body styles and shapes help mold the perfect sound for the style. you play. From sweet and warm, to loud and thrashing, the guitar is one of the most versatile instruments...
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B.
Most styles of music have a specific guitar that embodies each genre's sound.
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【单选题】电路如下图所 示，RF引入的反馈为（）。【图片】
A.
正反馈
B.
串联电压负反馈
C.
并联电压负反馈
D.
并联电流负反馈
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【单选题】电路如下图所 示,RF引入的反馈为()。
A.
正反馈
B.
串联电压负反馈
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【单选题】— What_________can you see? — I can see one square and one triangle.
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vegetables
B.
shapes
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【单选题】听力原文：M: I heard that you have the most unusual hobby. Would you like to share? W: Well, nothing special. Collecting socks is my favorite one. M: Wow! Really? W: Collecting socks is not simply doing th...
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【判断题】胴体重是指猪屠宰后去头、蹄、尾及内脏后的向躯体重量。
A.
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【单选题】电路如下图所 示，RF引入的反馈为（）。【图片】
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正反馈
B.
串联电压负反馈
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并联电流负反馈
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May I help you?
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colours
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