【正文】 s essay affects me very deeply. Not as an urging to bee self reliant – I39。s Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the boundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline in trading volume and sa le rate showed a downturn this year. In the ―Grand View: Chinese Painting Highlight‖ session at China Guardian 2021 spring auctions, Pan Tianshou’s representative work Eagle, Rock and Flora hit a record auction price of 279 million yuan, while Li Keran’s masterwork Jinggang Mountain fetched million yuan, an unexpected high in recent years. However, the trading volume fells to billion yuan from billion yuan in the same period the year before. The Huangchen 2021 Spring Auctions, which recorded million yuan in total sales, experienced the same. The section number went down to 5 from 12 pared to last year. According to expert Shao Jianwu, the art market did not attract much excitement this year due to the booming stock market and the persistent problems of fery and fake deals. The two pieces of Chinese painting notched up high price this spring due to their own value not due to a revival in the market. The successful transaction of two works with a hammer price of more than 100 million yuan once again confirms that valuable and rare works of high quality always earn the longlasting high price. Chinese painting and calligraphy is still the pillar of the market. However, the overall sales rate has dropped slightly, which reflects the demand for the ordinary auction goods has weakened,‖ said the president of China Guardian’s Hu Yanyan. Besides, the entry of new buyers also makes certain changes to the direction of purchasing. In a word, the overall market trend is very unpredictable. Although China Guardian 2021 Spring Auctions has achieved remarkable results, it does not mean that the market has walked out of the predicament. We still have to wait for the big economic boom to invigorate the art market.‖ Even so, the hot pursuit of some special items appeared this spring. A special session of China Guardian Spring Auctions titled ―Fine Gilt—Bronze Buddhist Images‖ achieved a great deal with total sales volume of million yuan and 92 percent sale rate. The 5th Shamar Rinpoche Statue from 1617th century of Tibet was sold for million yuan. The Beijing Chengxuan Auctions featured almost 2,800 items of coins and stamps in three sessions with good sale rate. The Huachen Auctions also set a special session of photographs under the condition of largescale decline of auction sessions. There was a palpable dull thud of disappointment that acpanied the return of the imperial entourage of Zhen Huan to her homeland. It followed a couple years of hushed excitement as Chinese fans were fed tidbits about their proud concubine who was supposed to conquer the high ground of the North American market. Zhen Huan is, of course, the title character of The Legend of Zhen Huan, a 2021 television series that swept China off its feet and later took other Asian countries by storm. Two years ago, it was reported that HBO, a premium cable service headquartered in the United States, was going to air it in North America after some modification. Now, a condensed version that provides English subtitles but no dubbing has finally been made available on Netflix for online streaming. This version, highly anticipated as a milestone in China39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。 6）定期保養(yǎng) 電池在使用一定時(shí)間后應(yīng)進(jìn)行定期檢查，如觀察其外觀是否異常、測(cè)量各電池的電壓是否平均等；如果長(zhǎng)期不停電，電池會(huì)一直處于充電狀態(tài)這樣會(huì)使電池的活性變差 ,因此即使不停電， UPS也需要定期進(jìn)行放電試驗(yàn)以便電池保持活性。放電電流一般要求在 ~3C,UPS 在正常使用中都能滿(mǎn)足此要求，但也要防止意外情況的發(fā)生，如電池短路。電池應(yīng)正立放置 , 不可傾斜角度。山特 UPS標(biāo)準(zhǔn)機(jī)機(jī)內(nèi)電池均為松下鉛酸免維護(hù)電池，長(zhǎng)效型外置電池也推薦使用松下鉛酸免維護(hù)電池或其他品牌優(yōu)質(zhì)免維 護(hù)電池。 UPS生產(chǎn)廠家也可以直接通過(guò)網(wǎng)絡(luò)了解分布在世界各地的 UPS的運(yùn)行情況，便于向用戶(hù)提供系統(tǒng)診斷和維修等守候服務(wù)，提高了服務(wù)的快速性和準(zhǔn)確性。一是 UPS及其監(jiān)控系統(tǒng)與其所保護(hù)的負(fù)載 —— 計(jì)算機(jī)或局域網(wǎng)絡(luò)間的交互作用。并機(jī)系統(tǒng) 的熱待機(jī)到帶載運(yùn)行的自動(dòng)判定與轉(zhuǎn)換。根據(jù)系統(tǒng)運(yùn)行的狀態(tài)參數(shù)識(shí)別外部指令，決定執(zhí)行外部指令的方式，包括系統(tǒng)功能和運(yùn)行參數(shù)的調(diào)整。如果遇到重大故障，可以就用戶(hù)預(yù)測(cè)的 190多種故障情況，自動(dòng)向傳呼機(jī)或個(gè)人電腦發(fā)出最多長(zhǎng)達(dá) 40個(gè)字的求助信息。在逆變器保護(hù)電路中采用性能優(yōu)良的過(guò)流保護(hù)技術(shù)，使逆變器 不僅具有較強(qiáng)的過(guò)載能力，允許 100％負(fù)載不平衡（指三相逆變器），而且具有強(qiáng)有力的自身保護(hù)。 （ 5）諧波會(huì)對(duì)鄰近的通信系統(tǒng)產(chǎn)生干擾，輕者產(chǎn)生噪聲，降低通信質(zhì)量；重者導(dǎo)致住處丟失，使通信系統(tǒng)無(wú)法正常工作。近三四十年來(lái)，各 種電力電子裝置的迅速發(fā)展使得公用電網(wǎng)的諧波污染日趨嚴(yán)重，由諧波引起的各種故障和事故也不斷發(fā)生，諧波危害的嚴(yán)重性才引起人們高度的關(guān)注。另外諧波電流通過(guò)電網(wǎng)時(shí)會(huì)產(chǎn)生 有功損耗，對(duì)電網(wǎng)的運(yùn)行很不利。當(dāng)然兩者在整流 /充電器和逆變器的設(shè)計(jì)指標(biāo)上是有差異的。采用集中供電的應(yīng)急電源可克服其他供電方式的諸多缺點(diǎn)。在 IPM BP225 UPS 淘汰后可再購(gòu)買(mǎi)一臺(tái)新的臺(tái)達(dá)(GESNT100k)UPS,組成并聯(lián)系統(tǒng) ,使我站 UPS系統(tǒng)更加安全可靠。在臺(tái)達(dá) UPS安裝完畢后還可以讓其不帶負(fù)載運(yùn)行一段時(shí)間 ,以測(cè)試其工作性能。 缺點(diǎn) : (1)增加額外電路 ,增加購(gòu)置成本。 (3)備機(jī)的蓄電池將長(zhǎng)期處于浮充狀態(tài) ,電池?zé)o法放電 ,影響電池壽