An experiment is done to study the properties of magnets. Which of the following statements is true about magnets? A. Magnets only attract non-magnetic materials. B. Magnets can attract or repel each other. C. Magnets always have the same strength. D. Magnets do not work in water. ...
B. Magnets repel each other at one pole and attract at the other. C. Magnets only attract metals. D. Magnets have no E. ffect on non-metallic objects. 相关知识点: 试题来源: 解析 B。磁铁不是能吸引所有材料,A 选项错误;磁铁同极相斥异极相吸,B 选项正确;磁铁不只吸引金属,还可以吸引一些...
The result of the experiment about magnets is that like poles repel. Which one is wrong? A. Like poles repel each other. B. Similar poles push away. C. Different poles attract. 相关知识点: 试题来源: 解析 C。本题考查关于磁铁实验结论的表达。题干要求选出错误的一项,C 选项“Different ...
After an experiment, we learned that magnets attract certain metals. Which one is attracted by a magnet? A. Plastic. B. Wood. C. Iron. D. Glass. 相关知识点: 试题来源: 解析 C。本题考查对磁铁吸引特定金属这一结论的理解。A 选项塑料,B 选项木头,D 选项玻璃,都不是金属,不会被磁铁吸引...
百度试题 结果1 题目24 Study the arrangements of the magnets below.Which arrangement is not possible? 3(1)(2)N SN S SN NS S\N SN(3)(4)N SN SN SS NS N 相关知识点: 试题来源: 解析 3 反馈 收藏
Magnetic clamping means with which is generated by means of permanent magnets and, by virtue of the permanent magnets a - and disengageable holding forceMEIER KARL HEINRICH
apermanent magnets which do not touch the vessel to stick onto the These tasks include ultra sonic scanning, surface preparation via wire brushes and grinding and milling operations. Traction for the vehicle is effected by the use of two independent rubber belts driven by DC servos. 正在翻译,...
aa field yoke having a plurality of permanent magnets which constitute field poles so that a polarity thereof is alternated and which are arranged linearly, and an armature facing an array of the permanent magnets through a magnetic air gap; 领域轭有线性地安排构成领域杆永久磁铁的复数,以便因此极...
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