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当前学科：高炉原料工
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在烧结生产中混合料矿槽料位应稳定在（）范围内。
A . 1/4～1/3
B . 1/3～1/2
C . 1∕2～2∕3
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依据作用范围，除草剂可分为（）除草剂和（）除草剂。在草坪草播种前，通常选用（）除草剂进行杂草的防除。
下列疾病属性传播疾病的是（）
肾积水与肾囊肿的主要鉴别点是（）
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阅读材料，回答题。 The New Technology ApplicationOn a more mundane level, third-generation mobile telephones, despite all the delays and the billions squandered on 3G licenses by telecom firms, are still expected to offer consumers high-speed, always on mobile internet access, complete with video, in the next few years.Rapidly proliferating "WiFi" networks already offer wireless access on a local basis. Tiny tracking chips called radio-frequency identification devices are being used as pet passports.Soon they will be small, powerful and cheap enough to be implanted into everything form humans to milkcartons recording and transmitting real-time medical data, or serving as a form of inventory control.Sensors of every kind, including video cameras, should also become much smaller and cheaper.Forrester Research, a technology consultancy, predicts that 14 billion such devices will be connected to the internet by 2005.How rapidly such new technology is introduced will depend on a number of factors the state of the economy, the supply of investment capital and the appetite of consumers for new products or services ! Fortunes will be made and lost many times over.But whatever happens, the power of computing and communications look set to continue to grow, and its price to fall, at a steady rate for the next few decades.That will make it possible, at least in rich countries, to record most human interactions, wherever and whenever they take place, and to store and analyze this ocean of data at low cost.For the sake of argument, this survey will assume that we are heading towards a networked society of ubiquitous, mobile Communication capable of constant monitoring.Whether this arrives in 20,30 or 40 years does not really matter.The point is that the destination seems not merely possible, but probable, so it is not toosoon to ask: What do we want this technology to do?The internet has already thrown up a host of legal and political conundrums, but, these are only a small foretaste of the dilemmas about privacy, security, intellectual property and the nature of government itself that will have to be faced over the coming decades.The debate has already begun. This survey will outline some of main issues, and speculate on the way they are likely to go. Radio-frequency identification devices__________.
下列哪种情况不准接通机上和地面电源？（）
2013年9月中旬，江浙地区一般进入秋季（如果连续10天日平均气温低于22℃，则被认为进入秋季）。读苏州这年9月中下旬几日的天气状况表，回答下面小题。 这年9月17～25日，苏州日温差的大致变化规律及影响因素分别是（） 此段时间，苏州地区（）
系统流程图是描述()的工具。A.逻辑系统B.程序系统C.体系结构D.物理系统
关于合同结构图的说法，正确的是（）。
关于点滴状副银屑病下列正确的是（）。