对于任何一只射频电子标签来讲,都具有惟一的工D号,这个ID号对于一只标签来
讲,是不可更改的.
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区域地理信息系统是具有有限目标和专业特点的地理信息系统,为特定的目的服务。
Which aspect of intelligence has been emphasized most recently?
The Ozone Layer, found in the stratosphere between 10km and【M10】km
above the ground, protects earth from the harmful effects of certain【M1】______
wavelength of ultra-violet (UV) light from the sun, specifically UV-B.【M2】______
Any significant decrease in ozone in the stratosphere would result from an【M3】______
increase of UV-B radiation reaching the earth surface.
Scientists warned for decades that increases in levels of UV-B【M4】______
radiation must cause the increase in skin cancers. 【M5】______
An Antarctic "ozone hole" was discovered in 1985. Since then,
scientists have observed ozone depletion in the middle and higher latitudes.
This year, the biggest ozone hole even recorded was observed over 【M6】______
Antarctica, expanding over the southern tip of South America. 【M7】______
To halt ozone depletion, countries committed themselves to ban the use【M8】______
and production of CFCs through implementation of the 1987 Montreal Protocol.
According to data received from the Cape Grimm Global Atmosphere
Monitoring Station locating in Australia, which measures worldwide CFCs【M9】______
in the lowest layer of the atmosphere, the most common CFCs, such as
like Freon used in refrigeration, have reached zero growth. 【M10】______
This means that these substances are not increasing in concentrations
on the earth's surface. Less common CFCs have begun to decrease in the
last two years.
【M1】
校学生会号召大家周六中午12:00在主楼前面给贫困地区的孩子捐献棉衣,但李明有事 情外出,请你以李明的名义,给其同宿舍同学写一份留言,留言包括以下内容:
1.留言人:李明
2.留言内容:捐献棉衣、捐献活动组织者、捐助对象、捐助时间、捐助地点、捐助;不要迟到
3.留言对象:宿舍同学
4.留言原因:有事情外出
Words for reference:
The Student Union 学生会 donate 捐献 rural areas 农村地区
Main Building 主楼 dormitory 宿舍
Message
Message Leaver:______
Message:______
Message for:______
Message leaving reason:______