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50401
IGBT是一种全控型器件,其全称是什么?
50402
GTO是一种全控型器件,其全称是什么?
50403
流过晶闸管的电流有效值为157A,考虑两倍安全裕量,则需选取晶闸管的额定电流为多少?
50404
关于电力电子器件的特点,以下哪一项描述是错误的?
50405
以下哪一种方法是让晶闸管正确导通的方式?
50406
在下列电力电子器件中开关频率最高的是哪一种器件?
50407
电力电子器件开关工作频率较高时,产生的损耗称为什么?
50408
按照电力电子器件的可控程度分类,PowerDiode(电力二极管)属于哪一类?
50409
在现代高层建筑中电梯是不可缺少的设备,其调速通常采用变频调速,请问在采用变频调速过程中包含了以下哪一种电能变换(或变换的组合)?
50410
电力电子装置大量用于电力系统的无功补偿或谐波抑制,以下哪一种装置能起到谐波抑制的作用?
50411
目前我国在建的世界上电压等级最高、输送距离最远、输送容量最大的直流输电工程项目(新疆昌吉-安徽古泉),电压等级为多少?
50412
高压直流输电从送电端到受电端,包含以下哪种变换(或变换的组合)?
50413
电力电子技术的诞生是以哪一种器件的产生为标志的?
50414
在描述电力电子技术与其他学科之间的倒三角形关系中,没有出现的学科是?
50415
以下哪种元素可以作为半导体材料?
50416
太阳能经过光伏电池发电后并网,属于哪一种变换?
50417
充电宝在给手机锂电池充电的时候采用了以下哪种变流方式?
50418
整流是以下哪两种电能形式之间的转换?
50419
Paper-cutting in China can be geographically divided into the()style and the()style.(请按答案首字母先后顺序填写,两个答案之间空一格,不加标点符号)
50420
In()and()dynasties, paper-cutting experienced its peak development.(请按朝代顺序填写,两个答案之间空一格,不加标点符号。朝代首字母大写)
50421
The oldest surviving paper cutting works in China are the five pieces of Tuanhua paper cuttings and they were found in()in 1950s.(填写地名拼音)
50422
“Four Treasures of the Study” include(),(), paper and the ink stones /ink slab.(请按答案首字母先后顺序填写,两个答案之间空一格,不加标点符号)
50423
Burial jade articles are jade objects specially prepared in ancient times for the purpose of preserving().
50424
In the oracle bone inscriptions, yu(jade)is a()character that looks like three pieces of jade threaded on a string.
50425
There are two types of Huaiyang Clay Figurine in Henan Province. One is of()type, the other is of()type.(请按答案首字母先后顺序填写,两个答案之间空一格,不加标点符号)
50426
It was until()and()dynasties that the clay figurine had been substantially produced and became one of the main artworks in the mass's cultural life.(请按朝代顺序填写,两个答案之间空一格,不加标点符号。朝代首字母大写)
50427
Clay figurine can date back to the()Period.
50428
The Huishan Clay Figurine which stems from the western suburb of()City, Jiangsu Province began in the Southern Dynasty and flourished in Ming Dynasty.
50429
The fourth step of the process of tea ceremony is to()tea leaves and then brew the tea.
50430
The classification of Chinese tea can be divided into six types based on the degree of fermentation, that is, green tea ,(), Oolong tea,dark tea, white tea, and yellow tea.
50431
As our ancestors so rightly put it, “Firewood, rice, oil, salt,(),()and()begin a day.”(请按答案首字母先后顺序填写,每个答案之间空一格,不加标点符号)
50432
The Classic of Tea written by()is an early work on tea, summarizing all knowledge of tea in China up to that date.
50433
As is recorded in Shen Nung’s Herbal Pharmacopeia《神农本草经》, during the early Chou dynasty, tea in China was used mainly as().
50434
People often beautify their homes with paper cuttings on().
50435
During the process of paper cutting,()methods are often used.
50436
Paper cutting tools include().
50437
Chinese tea culture is a blend of(),()and(), the connotation of which is a cultural and etiquette phenomenon with distinct Chinese characteristics.
50438
What are the functions of Chinese knots in Chinese history?
50439
Ritual jade articles were used by ancient nobles as protocol vessels in such ceremonial activities as().
50440
Which of the following are Green tea?
50441
Which of the following are unfermented tea?
50442
In()Dynasty, paper cutting industry was more mature and artists who took paper cutting as their profession appeared.
50443
The color most frequently used in paper cutting is(), which symbolizes health and prosperity.
50444
China, where paper was invented in()Dynasty, has a long history of paper arts and crafts .
50445
Which branch of clay figurine is called“Ni Huo”(泥货)by local people?
50446
Who was the initiator of Tianjin Clay Figurine Zhang?
50447
In which dynasty did the Huishan Clay Figurine begin?
50448
Among the four famous ink stones / ink slabs, which is not made of stone?
50449
Xuan paper was originally produced in the()dynasty in Jing County, which was under the jurisdiction of Xuan Prefecture(Xuanzhou), hence called Xuan paper.
50450
Which type of Chinese knots had the symbolic meaning of “longevity”?
50451
In ancient China, gentlemen wore jade ornaments, mainly because().
50452
In Liang Zhu Culture and Long Shan Culture, many jades such as Cong(玉琮),Bi-disk(玉壁)or Gui tablet(玉圭)were believed to be used for()purposes.
50453
There are()steps in the process of making tea.
50454
Which of the following is White tea?
50455
Which of the following belongs to Semi-fermented tea?
50456
()is the home of tea and the birthplace of tea culture.
50457
The art of tea is said to be born in the()dynasty and blossomed in the()dynasty.
50458
One of the taboo of using chopsticks is not to()the bowl with chopsticks.
50459
The()principle of mechanics was applied into the practice of using chopsticks.
50460
One should try to avoid moving the Lazy Susan even slightly when someone is transferring food. “Lazy Susan” means()in Chinese.(填写其中文释义)
50461
The taboos of chopstick use in China include().
50462
Which of the following statements indicate the significance of the appearance of chopsticks?
50463
The origin of chopsticks or Zhu in China is related to().
50464
What are the principles of table manners one should follow in China?
50465
Which of the following vegetables were introduced from the west region in Han dynasty?
50466
During the forming period of Chinese food culture,()were the principal food in Qin dynasty
50467
When we use chopsticks, which finger doesn’t work?
50468
In which dynasty, table manners had come into being a perfect system?
50469
Which of the following is the representative Sichuan cuisine?
50470
Which of the following is the representative Guangdong cuisine?
50471
Which of the following is the representative Jiangsu cuisine?
50472
Which of the following is the representative Shandong cuisine?
50473
Writing is one of the most important manifestations of civilization.()found in the Yin Dynasty Ruins in Anyang, is one of the oldest characters in the world.(请注意句首首字母大写)
50474
Of the one hundred most populous surnames in the country today,()of them are found in Henan province alone.(以阿拉伯数字填写)
50475
Henan’s one-character abbreviation is豫, named after(), a Han Dynasty province that included parts of Henan.
50476
Jiaotu(椒图)looks like a conch or a().
50477
Suanni(狻猊)resembles a(), and his favorite food is the smoke generated from burning incense.
50478
Pulao(蒲牢)had great fear of(), and whenever one would attack Pulao(蒲牢), his roar would echo across the water.
50479
Chiwen(螭吻)is a creature with a Loong’s head and a()body.
50480
Bixi(赑屃)is a creature with a loong’s head and a()body.
50481
The structure of the Chinese culture is typical of integrated pluralism. “Integrated pluralism” means()in Chinese.(汉语意思)
50482
The four great inventions of ancient China are(),(),(), and().(按照答案首字母顺序填写,每个答案之间空一格,不加标点符合)
50483
The organ through which the people exercise the state power are the()and the local congresses at different levels.(请注意专有名词首字母大写)
50484
The 4 municipalities of China are(),(),(), and().(按城市拼音首字母顺序填写,每个答案之间空一格,不加标点符合)
50485
China is divided into()provinces,5 autonomous regions, 4 municipalities and 2 special administrative regions directly under the centre government.(答案以阿拉伯数字表示)
50486
The land surface from west to east may be classified as(),(), and()categories .(按阶梯顺序填写,三个答案之间空一格,不加标点符号)
50487
()and()are the two largest islands in China.(按岛屿面积大小顺序填写,两个答案之间空一格,不加标点符号)
50488
Which are the ancient Chinese capitals located at Henan?
50489
Henan saw the development of China’s first().
50490
According to Wangfu in Han dynasty, the dragon is described as having().
50491
The national emblem of the People’s Republic of China shows Tian’anmen the center, surrounded by().
50492
()are the basic principles of the Chinese government in handling the relations between ethnic groups
50493
In Eastern Han Dynasty, a 36-member diplomatic mission led by()reopened the Silk Road. Luoyang marked the eastern starting point of the Ancient Silk Road.
50494
Longmen Grottoes was completed in pieces over 400 years from the()Dynasty until the Northern Song Dynasty.
50495
Which son of Loong usually rests on the musical instrument to hear the melodies from the player?
50496
Which son of Loong was featured on many gilded(镀金的)decorative plates on gates?
50497
Whose image is used to protect any place where food was prepared and served?
50498
Which son of Loong became a common symbol for the court in ancient China.
50499
Which son of Loong is good at roaring, using the sound that can penetrate into the sky as its weapon.
50500
Which son of Loong is good at carrying weighty objects?
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