更多“青少年在使用网络中，正确的行为是：（）。”相关的问题
用钢尺丈量两段距离：D 1＝180.56 m±0.04m，D 2＝254.45m±0.04m；求每段距离的相对中误差。
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关于证券市场的基本功能，以下说法正确的有 A.证券市场具有资本定价功能 B.证券市场可以让资金盈余者通过卖出证券而实现投资 C.证券市场可以使生产者实现套期保值的目的 D.证券市场的资本配置功能是指通过证券价格引导资本的流动从而实现资本的合理配置功能
A.证券市场具有资本定价功能
B.证券市场可以让资金盈余者通过卖出证券而实现投资
C.证券市场可以使生产者实现套期保值的目的
D.证券市场的资本配置功能是指通过证券价格引导资本的流动从而实现资本的合理配置功能
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A . 新事物的产生和旧事物的灭亡
B . 事物的一切运动变化
C . 事物根本性质的变化
D . 事物存在范围的扩大
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压敏电阻式进气歧管压力传感器的信号电压随进气的压力而( )
A. 不变 B. 上升 C. 下降 D. 无规律
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岁男孩，阵发性痉挛性咳嗽20余日，出生时接种卡介苗，1：2000OT试验硬结直径20mm，胸片右肺门淋巴结增大，诊断为（）
A . 百日咳
B . 百日咳合并肺炎
C . 支气管淋巴结核
D . 原发综合征
E . 支原体肺炎
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TBA22灌装机进入纸仓前裸露时间≤（）min
A.20分钟
B.10分钟
C.30分钟
D.5分钟
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总体国家安全观，强调（），以促进国际安全为依托，维护各领域国家安全，构建国家安全体系，走中国特色国家安全道路。
A.以人民安全为宗旨 B.以政治安全为根本 C.以经济安全为基础 D.以军事、文化、社会安全为保障
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患者，女性，62岁，脑卒中后出现踝跖屈肌痉挛影响其步行已3个月。适当的治疗策略应是（）
A.口服巴氯芬，如仍不能控制其症状，进行踝关节融合 B.牵张方案，供应一个踝足矫形器 C.开始治疗前进行EMG／神经传导检查来评定痉挛 D.选择性脊神经背根切断术 E.安放鞘内巴氯芬泵
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属于局部麻醉药的是（ ）。
A.甲氧氟烷 B.氟烷 C.羟丁酸钠 D.盐酸氯胺酮 E.盐酸利多卡因
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A . 脂蛋白B . 载脂蛋白C . 糖蛋白D . 球蛋白E . 清蛋白
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路虎发现神行以下哪两个配置配备了电动感应尾门？（）
A.200pure版
B.240pure版
C.SE版
D.特别版
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Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away—straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest (害虫) problems. Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running "fevers". Farmers could then spot-spray, using 40 to 70 percent less pesticide than they otherwise would. The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of agricultural land in the United States, "says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.
A．resorting to spot-sprayingB．consulting infrared scanning expertsC．transforming poisoned rainD．detecting crop problems at an early stage
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铁路安全监督管理办公室，简称为（）。
A . A、安监室
B . B、安全室
C . C、安监办
D . D、安全监管办
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属于第二级预防的措施有（)
A.早治疗
B.早发现
C.早宣传
D.早诊断
E.早预防
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