雅思哥20xx年912月雅思口語(yǔ)題庫(kù)part1附部分答案-資料下載頁(yè)
2025-06-07 22:45本頁(yè)面
【正文】 e a calm environment.Since I am in college now, I would say yes. Because the campus we have is a really great place to walk. The path around the lake, you know, with all the trees and flowers. That’s amazingSince I am in college now, I would say everyday, besides the textbooks, I often go to the school library to read. And many of my friends have a kindle, it is a great tool to read book without carrying heavy books with you.No, I don’t, with the rapid development of technology, we can download book from the Internet and store it in a kindle. We just need to bring kindle with us then we can read at any time. So I don’t need to store books in my home.As far as I know, the answer is no. Personally, I think most people like to read but they don’t have enough time to read. They have to work at day time and when they finish their work, they are busy with other things, such as dating, picking up their children form school.Personally, I think most people like to read but they don’t have enough time to read. They have to work at day time and when they finish their work, they are busy with other things, such as dating, picking up their children form school.Well, I think this is a question without answer. Because it is difficult to judge if a person like read or not if you didn’t know they pretty well. So sorry.No I don’t, with the rapid development of technology, there are sorts of ways we can get information, the way I usually use to collect information is through the Internet. It is a trend for people to find news on line. 對(duì)于采區(qū)變電所的位置是由供電局電壓等級(jí)，采煤方法采區(qū)巷道布置方式和工作面機(jī)械化程序等因素決定的，所以選擇變電所位置時(shí)應(yīng)滿(mǎn)足以下條件：盡量位于負(fù)荷中心，以減少低壓線路長(zhǎng)度和電壓損失，保證采區(qū)設(shè)備的供電質(zhì)量。根據(jù)電纜敷設(shè)的合理性將配電點(diǎn)分別設(shè)在各區(qū)段主斜井與副斜井人行通道處合適的位置上。這些配電點(diǎn)隨工作面的推進(jìn)定期移動(dòng)。 變電所內(nèi)要求通風(fēng)良好，溫度不得超過(guò)附近巷道溫度5℃。設(shè)備運(yùn)輸要方便，便于電纜進(jìn)出，地質(zhì)條件好，頂?shù)装宸€(wěn)定，無(wú)淋水。每個(gè)采區(qū)最好只設(shè)一個(gè)變電所，對(duì)整個(gè)采區(qū)和掘進(jìn)工作面供電，并且盡量不遷移或少遷移變電所，減少變電所硐室的開(kāi)拓費(fèi)用。故采區(qū)變電所位置如采區(qū)巷道布置附圖所示（1）在正常工作時(shí)電纜芯線的實(shí)際溫升不得超過(guò)絕緣所允許的溫升，否則電纜將因過(guò)熱而縮短其使用壽命或迅速損壞。橡套電纜允許溫升是65176。，鎧裝電纜允許溫升是80176。，電纜芯線的時(shí)間溫升決定它所流過(guò)的負(fù)荷電流，因此，為保證電纜的正常運(yùn)行，必須保證實(shí)際流過(guò)電纜的最大長(zhǎng)時(shí)工作電流不得超過(guò)它所允許的負(fù)荷電流
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