更多“调度操作命令下达分为电话发令和发令两种方式（）”相关的问题
The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill. Many innovations that were once heavily supported and publicized, such as fish-protein concentrates, have since fallen by the wayside. The proposals themselves were technically feasible, but they proved to be economically unfeasible and yielded food products culturally unacceptable to their consumers. Recent innovations such as opaque-2-maize, Antarctic krill (磷虾群), seem more promising, but it is still too early to predict their ultimate fate. One characteristic common to unsuccessful food innovations has been that, even with extensive government support, they often have not been technologically adapted or culturally acceptable to the people for whom they had been developed. A successful new technology, there fore, must fit the entire socio-cultural system in which it is to find a place. Security of crop yield, practicality of storage and costs are much more significant than had previously been realized. But the protein quality in tortillas made from opaque-2-maize will be of only limited benefit to a family on the margin of subsistence if the new maize is not culturally acceptable or is more vulnerable to insects. The adoption of new food technologies depends on more than these technical and cultural considerations; economic factors and governmental policies also strongly influence the ultimate success of any innovation. Economists in the Anglo-American tradition have taken the lead in investigating the economics of technological innovation. Although they exaggerate in claiming that profitability is the key factor guiding technical change -- they completely disregard the substantial effects of culture -- they are correct in stressing the importance of profits. Most technological innovations in agriculture can be fully used only by large landowners and are only adopted if these profit-oriented business people believe innovations that carry high rewards for big agri-business groups will be adopted even if they harm segments of the population and reduce the availability of food in a country. Since Large segments of the populations of many developing countries are close to the subsistence margin and essentially powerless, they tend to be the losers in this system unless they are aided by a government policy that takes into account the needs of all sectors of the economy. Therefore, although technical advances in food production and processing will perhaps be needed to ensure food availability, meeting food needs will depend much more on equalizing economic power among the various segments of the populations within the developing countries themselves.
A．the difficulties of applying technological solutions to the problem of food shortagesB．the means of assessing the extent of the world food shortageC．the costs of introducing a new food technology into a developing countryD．the nature of the new technological innovations in the area of food production
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下列花卉中主要用于观叶的花卉有（）
A.文竹
B.非洲菊
C.雏菊
D.朱蕉
E.蜘蛛抱蛋
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根据《物权法》规定，物权是指权利人依法对特定的物享有直接支配和排他的权利，包括（）。
A、所有权
B、用益物权
C、担保物权
D、继承权
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机车膨胀水箱的作用是存储一定的冷却水，同时将柴油机（）中的水蒸气排掉。
A.燃油
B.机油
C.低温水
D.高温水
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下列各项属于消费性运输需求的是（）。
A.公务和商务出行
B.承接加工项目洽谈的旅行
C.考察风土人情
D.外出学习考察
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“浊度”记载用浊度仪现场测定水样的浊度，以度计，有效数字最多（）位数，取整数。
A . A、1
B . B、2
C . C、4
D . D、3
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某减肥药生产厂研发了一种新药，想了解一下市场的需求情况，因此派了某些受过专业训练，且身材比较肥胖的访员调查了一些胖人的减肥情况，考虑到访员可能会对调查结果产生影响，因此这样安排是合理的。
A.对 B.错
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阳极铝导杆与爆炸焊块的焊接端面，坡口刨削要求（）。
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处于相平衡的气体称为（），其所具有的压力称为（）。
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某国有控股企业，为建立健全收入分配的激励机制和约束机制，在企业内部逐步实行职工持股参与企业收益分配的制度。下面对该企业这一做法的认识，正确的是
A . 它取消了按劳分配，强化了按劳动力要素分配B . 它使该企业的国有经济性质发生了根本改变
C . 这是探索在企业内部建立生产要素参与分配的新机制
D . 该企业由此转变为集体经济
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“UVW贴图”修改器中的<贴图通道>必须配合以下哪个设置一起使用（）.
A、材质ID号
B、“材质编辑器”
C、“多维/子”材质
D、“渲染”
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农业专业化包括()。
乐天食品饮料有限公司是在FR市提供土地厂房及相关优惠政策的前提下投资成立的。公司在FR市建有拥有8000头奶牛的供奶基地，并通过与基地农户签订收购合同，建立了相对稳定的鲜奶购销体系，这一体系解决了农户“卖难”和公司“断奶”问题。该公司2003年实现销售收入9928万元，基地农户每月平均增收1300多元。在该公司带动下，FR市已建立百头以上规模奶牛养殖场26个，拥有5头以上奶牛的养殖户达1870个。
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在站内如必须走道心时，应在其前面设置专人防护。
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美发直发器以下哪个图标是华氏（）。
A.°C
B.°G
C.°F
D.°E
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