臭氧是一种天蓝色、有臭味的气体,在大气圈平流层中的臭氧层可以吸收和滤掉太阳光中大量的(),有效保护地球生物的生存。
B
暂无解析
得利机电检测有限公司,因工作性质是流动性有时要到 100 公里左右的城市进行检验.经常有 5~ 6 名人员乘车外出,外出时还带有少量的检测仪器,拟购一台公务车。单位主管财务的领导说: “购买 SUV 省钱 ”. 而负责技术的领导说: “最好是买一部 MPV .好用 ”. 请解释一下:
(1) SUV 与 MPV 的结构特点。
(2)哪种类型的车公务用更合适?
Nowhereinnatureisaluminumfoundfree,owingtoitsalways____withotherelements,mostcommonlywithoxygen.
IamsorryIhavenotimeatpresentto____moredetailorgiveyouanaccountofothercitiesofinterest.
Duetothebadweathertheplanewas____fortwohours.
Thepresentsituationforcedusto____thispolicy.
Urbancongestionwouldgreatlyberelievedifthe____chargedonpublictransportweremorereasonable.
Whyaretoday'soldermiddle-agedandelderlybecomingthenewwinners?
MissGreenwas()$100fordrivingafterdrinking.
Thecountry’schiefexportsarecoal,carsandcottongoods,cars_____themostimportantofthese.
Weall____yourcomingtohelpus.
Theeldestchildisthoroughly()becausetheyalwaysgivehimwhateverhewant.