适合于鲜切花交易和出售某些易腐烂商品的拍卖类型是（）。


A.英式拍卖B.荷兰式拍卖C.首价密封拍卖D.维克瑞拍卖

相关专题： 鲜切花  

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  • 共用题干
    Keeping Cut Flowers（鲜切花）
    1. While everybody enjoys fresh cut flowers around his/her house,few people know how to keep them for as long as possible .This may be done by keeping in mind a few simple facts.
    2. An important thing to remember about cut flowers is that they are sensitive to temperature.For example,studies have shown that cut carnations（康乃馨）retain their freshness eight times lon-ger when kept at 12℃than when kept at 26℃．Keeping freshly harvested flowers at the right tem-peratures is probably the most important aspect of flower care.
    3. Flowers are not intended by nature to live very long.Their biological purpose is simply to at-tract birds or insects,such as bees,for pollination（授粉）.After that,they quickly dry up and die. The process by which flowers consume oxygen and produce carbon dioxide（二氧化碳）, called respiration（呼吸）,generates the energy the flower needs to give the flower its shape and color. The making of seeds also depends on this energy.While all living things respire,flowers have a high level of respiration.A result of all this respiration is heat,and for flowers the level of heat relative to the mass of the flower is very high.Respiration also brings about the eventual death of the flower. Thus the greater the level of respiration,the sooner the flower dies.
    4. How,then,to control the rate at which flowers die?By controlling respiration.How is respi-ration controlled?By controlling temperature .We know that respiration produces heat,but the re-verse（相反的过程）is also true. Thus by maintaining low temperatures , respiration is reduced and the cut flower will age more slowly.
    5. Another vital factor in keeping cut flowers is the quality of the water in which they are placed. Flowers find it difficult to“drink”water that is dirty or otherwise polluted.Even when water looks and smells clean,it almost certainly contains harmful substances that can endanger the flowers. To rid the water of these unwanted substances, household chlorine bleach（漂白剂）can be used in small quantities.It is recommended that 15 drops of chlorine bleach(at 4%solution)be add-ed to each litre of water. The water and solution should also be replaced each day.
    Respiration plays a key role________.
    A: by keeping its original shape and color
    B: in the life of cut flowers
    C: to produce carbon dioxide
    D: for as long as possible
    E: by controlling temperature
    F: to replace the water and solution every day
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  • 阅读图文材料，完成下列问题。（19分)材料1：2012年9月19日上午，2012中国昆明国际花卉展暨2012第八届昆明冷亚国际农业博览会，在昆明国际会展中心隆重开幕。材料2：“云南区域轮廓图”。材料3：昆明和荷兰花卉生产各项条件的贡献率（%)

    指标

    气候等自然条件

    劳动力

    冷藏保鲜

    机械化科技

    鲜切花水平及广告等

    昆明

    50

    30

    10

    5

    5

    荷兰

    40

    5

    20

    20

    15（1)从地理位置、地形因素分析云南省的主要气候特征。（6分)

    （2)结合材料和所学知识，分析昆明发展花卉生产的有利条件。（8分)（3)根据材料3，分析促进昆明花卉生产的措施。（5分)

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  • 作为一般生态规律，越是耐寒的鲜切花越不耐热，越是耐热的鲜切花越不耐寒。

    A、对

    B、错

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  • 有关2008年云南鲜切花的叙述，正确的是（　　）。

    A、全国一半鲜切花产自云南

    B、出口30多个国家

    C、种植面积为52.4万亩

    D、产量52.9亿枝

    E、出口创汇1.01亿美元

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  • 鲜切花采收后应该采取预冷措施，比较适宜的预冷方式有______、水预

    冷、_____、强制通风冷却、冰预冷和冷库预冷等。

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