关于电磁辐射的单位转换问题,电磁炉中的能量转换过程,是电能转换为磁能,在转换为内能吗?但电磁能的一种能量
1、关于电磁辐射的单位转换问题
电磁辐射的测量方法通常与测量点位置和辐射源的距离有关,即所进行的测量是远场测量还是近场测量。由于在远场和近场的情况下,电磁场的性质有所不同,因此,要对远场和近场测量有明确的划分。
2、电磁炉中的能量转换过程,是电能转换为磁能,在转换为内能吗?但电磁能的一种能量
电磁炉的原理实际上类似工频电炉,电能转换为磁能,磁能再转换为电能(锅底的涡流),再转换成热能。
3、初三英语句型转换
1、The girl could hardly understand what he said, ______ __________?(反意问句)
2、How many sheep are there in Australia. ?(宾语从句) She asked ______ ______ _______ _______ ______ in Australia.
3、 They have sold out the light green dresses.(被动句) The light green dresses _______ ________ _________out.
4、 He got too angry to speak. (同义句) He got _______angry ______he ________speak
5、 Tom may be on the team ,or Jack may .(简单句) _________Tom _______Jack may be on the team.
6、 She didn’t reach the top of the mountain. Her brother didn’t reach it ,either.(合并成简单句) ______ _______ __________her brother reached the top of the mountain.
7、 The sweater costs 200 yuan .(划线提问) _______ ________ _________the sweater __________?
8、 Think hard ,and you’ll have an idea. _________ __________think hard ,you’ll have an idea.二、完成句子。
1、美国和澳大利亚都是说英语的国家。 ________America _________Australia_______ ________ _________
2、我们俩都不知道他的电话号码。 _______of us______his telephone number.
3、尽管医生已经劝了他戒烟,他仍然和以前抽得一样多。 _______the doctor has told him to ________ ________, he still_______ ______ ______ ______before.
4、艾尔斯山位于澳大利亚东南部。 Ayers Rock lies ________ _________ ________ _________Australia.
5、那天早晨我们在太阳出来之前就起床了。 We ______ ________early in the morning before the sun ________.
6、山顶上有多少人?一个也没有。 _______ _______ ________are there _______ ______ ______the rock?
7、她想要与汤姆谈谈有关他在校学习的事。 She feels_______ _______ a talk with him_______ his study at school.
8、就在那时他似乎听到窗外有奇怪的声音。 At that moment he_______ _______ _______ a strange voice _______ the window.
9、他请求我呆在那儿直到他回来。 He asked me_______ _______ _______ _______ he came back.
10、会议还有多久会结束? How _______ will the meeting _______ _______ ?
11、一个人一辈子干好事是不容易的。 It's not easy _______ one to do good _______ _______ _______.
12、汤姆的母亲决定让他们停学几天。 Tom's mother_______ _______ _______ him _______ _______ _______ for a few days.
13、万事开头难 _______ _______ a hard _______ .
14、世上无难事,只怕有心人。 _______ is difficult if you _______ _______ _______ _______ it.答案: 一、1.could she
2、 how many sheep there were
3、 have been sold
4、 so, that, couldn’t
5、 Either ,or
6、 Neither she nor
7、 How much does, cost
8、 If you二、
1、Both ,and ,are Enghlish-speaking countries
2、 Neither, knows
3、 Though ,stop smoking ,smokes, as much as
4、in the southeast of
5、 got up, rose
6、 How many people, on top of, None at all
7、 like having, about
8、 seemed to hear, outside
9、 to stay there until
10、 soon, be over
11、 for, all one's life
12、 decided to keep, away from school
13、 Everything has, beginning
14、 Nothing, put your heart into.。
4、初三英语句型转换
1、His grandfather took part in a Red Amry in 1934
2、 You can either watch TV at home or go to the cinema with us.
3、 Last Sunday Alice had fallen several times on the ice
4、 Would you please explain the sentence to me? Would you please tell me the meaning of the sentence to me?
5、 Being strict in your study, then you will catch up with your classmates.
6、 How many days has past since you borrowed this book from the library. How many days are there since you borrowed this book from the library.]
7、 Suddenly a watch on the ground was into his sight. 不太清楚一个空格填 一个还是多个。。。答案不是很正确。。仅供参考!!!
5、电气线路是用于传输电能、传递信息和宏观电磁能量转换的载体,电线电缆的选择对电气线路的防火有重要意义,下列场所应选用铝芯电...
B固定敷设用的布电线一般采用铜线芯。重要电源、重要的操作回路及二次回路、电动机的励磁回路等需要确保长期运行在连接可靠下的回路;移动设备的线路及振动场所的线路;对铝有腐蚀的环境;高温环境、潮湿环境、爆炸及火灾危险环境;工业及市政工程等场所不应选用铝芯线缆。非熟练人员容易接触的线路,如公共建筑与居住建筑;线芯截面为 6mm²及以下的线缆不宜选用铝芯线缆。对铜有腐蚀而对铝腐蚀相对较轻的环境、氨压缩机房等场所应选用铝芯线缆。本题答案为 B。