【名词&注释】
继电器(relay)、电磁铁(electromagnet)、机械能(mechanical energy)、奥斯特(oersted)、戛然而止(terminating abruptly)、第一人(first man)、电流的磁效应
[多选题]关于电和磁,以下说法正确的是
A. 电动机工作时是将机械能转化为电能
B. 发电机工作原理是利用电流的磁效应
C. 电磁继电器的主要部件是电磁铁
D. 奥斯特是发现电和磁联系的第一人(first man)
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学习资料:
[单选题]What can we learn about old women in terms of fashion?
A. They are often ignored by fashion designers .
B. They are now more easily influenced by stars .
C. They are regarded as pioneers in the latest fashion .
D. They are more interested in clothes because of their old age .
[单选题]30. It-s clear that________.
A. Shadow will not be easy to get m
B. the Browns were not satisfied with Shadow
C. Mr Snow didn-t check Shadow at all
D. Shadow likes barking a lot
[单选题]下列词语中,加点字的注音完全正确的一项是
A. 狡黠(jié) 跻身(jī) 恻隐(cè) 怏怏不乐(yàng)
B. 荫蔽(yìn ) 阔绰(chuò) 娆(ráo) 戛然而止(gá)
C. 粗糙(zào) 剽悍(biāo) 干涸(hé) 奄奄一息(yān)
D. 栈桥(zhàn) 躯壳(qiào) 氛围(fēn) 呱呱坠地(gū)
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