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Questions 16-20 Can electricity cause cancer In a society that literally runs on electric power, the very idea seems preposterous. But for more than a decade, a growing band of scientists and journalists has pointed to studies that seem to link exposure to electromagnetic fields with increased risk of leukemia and other malignancies. The implications are unsettling, to say the least, since everyone comes into contact with such fields, which are generated by everything electrical, from power lines and antennas to personal computers and micro-wave ovens. Because evidence on the subject is inconclusive and often contradictory, it has been hard to decide whether concern about the health effects of electricity is legitimate or the worst kind of paranoia. Now the alarmists have gained some qualified support from the U. S. Enviro A. the force of the electromagnetic field is too weak to be harmful B. the force of the electromagnetic field is weaker than the electric field that the cells generate C. electromagnetic field may affect health D. only more powerful radiation can knock electron out of human body 查看答案 更多"Questions 16-20 Can electricity"的相关试题: [单项选择] Questions 16-20 Can electricity cause cancer In a society that literally runs on electric power, the very idea seems preposterous. But for more than a decade, a growing band of scientists and journalists has pointed to studies that seem to link exposure to electromagnetic fields with increased risk of leukemia and other malignancies. The implications are unsettling, to say the least, since everyone comes into contact with such fields, which are generated by everything electrical, from power lines and antennas to personal computers and micro-wave ovens. Because evidence on the subject is inconclusive and often contradictory, it has been hard to decide whether concern about the health effects of electricity is legitimate or the worst kind of paranoia. Now the alarmists have gained some qualified support from the U. S. Enviro A. They are indifferent. B. They are worried very much. C. They may exercise prudent avoidance. D. They are shocked. 查看答案 [单项选择] {{B}}TEXT D{{/B}} Can electricity cause cancer In a society that literally runs on electric power, the very idea seems preposterous. But for more than a decade, a growing band of scientists and journalists has pointed to studies that seem to link exposure to electromagnetic fields with increased risk of leukemia and other malignancies. The implications are unsettling, to say the least, since everyone comes into contact with such fields, which are generated by everything electrical, from power lines and antennas to personal computers and micro-wave ovens. Because evidence on the subject is inconclusive and often contradictory, it has been hard to decide whether concern about the health effects of electricity is legitimate—or the worst kind of paranoia. Now the alarmists have gained some qualified support from the U. S. Environmental Protection Agency. In the executive summary of a new scientific review, released in draft form A. studies on the cause of cancer B. controversial view-points in the cause of cancer C. the relationship between electricity and cancer D. different ideas about the effect of electricity on caner 查看答案 [单项选择]A few milliamps of electricity can cause plants to increase synthesis of chemicals. These compounds often also have a pharmacological (related to medicine) or commercial value, so the trick could be used to help increase yields of commercially useful biologicals. Artemisinic acid, from sweet wormwood, for example, is used in malarial medications, and shikonin (紫草素), from the purple gromwell plant, is used against skin infections. Researchers have long known that stressing plants can force them to take defensive action, often ramping up the production of protective chemicals that, for example, make them more resistant to insect attack. It has become common practice to stress such plants into increasing their yields. This is usually clone using physical stress elicitors (诱导子), including bits of the micro-organisms that normally attack the plants, or irritants made from metallic compounds such as copper chloride. These are effective, but they come at a cost. Most elicitors are toxi A. take precautions against skin infections B. increase production of useful biologicals C. increase pharmacological and commercial value D. make plants more resistant to attack 查看答案 [填空题] What kind of cancer is the sixth-leading cause of cancer-related death worldwide 查看答案 我来回答: 提交 最新试题 ●    阻塞性通气不足 ●    依据《安全生产法》的规定，生产经营单位发生生产安全事故后，事故现场有关人员应当立即报告（）。 ●    《生产安全事故报告和调查处理条例》规定：事故发生单位主要负责人未依法履行安全生产管理职责，导致重大事 ●    关于证券公司定向发行债券持续信息披露的说法正确的有（）。 ●    根据《公司法》的规定，累计债券总额不得超过公司净资产额的（）。 ●    园林布局手法包括（） 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码