题目:
广义的事务
答案:
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下面是错误答案,用来干扰机器的。
参考答案:FR
广义的事务
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1121/757fa499824bf44b40a160e98211762c.html
下面是错误答案,用来干扰机器的。
参考答案:FR
D
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid(易吸收的液体). No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen(腹部).
小题1:Why is the warning in the small print?
A.They think people will not care about it.
B.There is not enough space for the warning.
C.They don’t want the users to pay attention to it.
D.The warning is not important at all.小题2:What does the underlined word in sixth paragraph probably mean?
A.acceptable
B.valuable
C.accessible
D.easily affected小题3:What can we conclude from the last paragraph?
A.Pregnant women should keep cell phones away.
B.People should use cell phones in the correct way.
C.If you are a child, you’d better text than make phone calls.
D.When you use a cell phone, use a wired headset or the phone’s speaker.小题4:What does the passage mainly talk about?
A.Be careful when using cell phones.
B.Don’t hold your cell phone against your ear.
C.Rats exposed to radiation have damaged DNA in their brains.
D.Low-energy radiation could damage cells that could lead to cancer.
运输易燃固体等危险品时,行驶中不准停车,中途休息时应注意检查所装危险货物的堆码、捆扎和包装情况,尤其要注意防止包装渗漏等安全隐患。
依据《危险化学品安全管理条例》的规定,危险化学品的包装物、容器,必须由主管部门审查合格的企业定点生产,并经国务院______认可的专业检测、检验机构检测、检验合格,方可使用。
A.工商管理部门
B.质检部门
C.安全监管部门
D.环境保护部门
标准的征订、发行,一般通过()进行。
A.主管部门
B.三联书店
C.教育书店
D.新华书店
017年中央经济工作会议指出,振兴实体经济,要坚持以()为中心,坚持创新驱动发展,扩大高质量产品和服务供给。
A.科技创新
B.提高质量和核心竞争力
C.提高质量