圖1獸牙海鉗殼石珠做的裝飾品圖2骨針

2021-03-04 06:20:58 字數 11407 閱讀 3739

1樓:皇朝

(1)山頂洞人。

(2)製作這樣的裝飾品和骨針都需要一定的磨製和鑽孔技術,這就表明,山頂洞人已經掌握了這些技術。骨針和裝飾品的出現進一步說明,山頂洞人已學會用骨針縫製衣服,還懂得了愛美等。

(3)上網查詢;去圖書館查詢;訪問、參觀歷史博物館等。

你能根據獸牙、海蚶殼、石珠做的裝飾品和骨針推測出當時的人們已經掌握了哪些生產和生活的技能嗎?說一說你

2樓:高小閃

1.掌握了磨製和鑽孔的技術。靠漁獵和採集為生。

已經掌握人工取火的技術(通過能打磨石器推斷),使用磨製石器。推斷這種原始人類生活在舊石器時代末期和新時期時代。可能是山頂洞人。

2.通過碳14測定其生活年代。觀察其生活聚落佈局(是否有獨立的墓葬區、生活區、壕溝等)。

現代資訊傳遞方式有什麼?(要寫出出自哪一本書) 20

3樓:匿名使用者

資訊傳遞的方式是多種多樣的。

按照流向的不同,可以有單向傳遞、反饋傳遞和雙向傳遞三種方式。單向傳遞是傳遞者到接收者的單方向傳遞,如組織內部下達各種簡報,上報各種報表,報紙上公佈各種行政法規和行政命令等。反饋傳遞是選由接收者向傳遞者提出要求,再由傳遞者將資訊傳給接收者的方式,如下級行政機關根據上級機關的要求上報各種資料包表,反映情況,彙報工作等。

雙向傳遞是指傳遞者和接收者互相傳遞資訊,傳遞者和接收者都是雙重身份,既是傳遞者又是接收者,如經驗交流會,上下級之間的請示和批覆等。

按資訊傳遞時資訊量的集中程式不同,有集中和連續兩種方式。集中式是時間集中、資訊量大的傳遞,如年終總結,季度情況反映等。連續式是不間斷的、持續的傳遞方式,如按日、按周、按季度上報的報表。

按資訊傳遞範圍或與環境關係的不同,可有內部傳遞和外部傳遞兩種方式。內部傳遞是組織內的傳遞,如機關內部的會議彙報、佈告、**等。外部傳遞是指上級行政機關與下級行政機關之間、同級行政機關、行政機關與其他社會團體或組織之間的傳遞,如某級黨的機關組織的與其它民主黨派的座談會等。

資訊傳遞的基本要求是速度快。如果一條有重要價值的資訊未能及時地傳遞給決策者,那麼決策者在做決策時就不能考慮這條資訊,因而就有可能造成難以彌補的,不可估量的損失。為了達到傳遞高速度、增加資訊的流動時間,減少資訊傳遞的中間環節是一個有力的措施。

縮簡訊息傳遞的渠道有時也能加快傳遞速度。要加快資訊傳遞速度,必須利用一些現代化的傳輸手段,如**、電報、傳真、計算機聯網、有線遠端通訊、無線通訊和行動通訊等。

4樓:痴白不是白痴

用電腦(**、msn……)

5樓:匿名使用者

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