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【多选题】
幼儿多动症病因可能包括以下哪些?A.
出生缺陷
B.
遗传
C.
神经心理发育异常
D.
家庭与环境
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举一反三
【单选题】Noxious emissions amount to 0.25~0.4 percent by volume of the___ ,depending on the amount of sulphur in the fuel and its lower heat value, and the engine type, speed and eficiency Noxious emissions有毒排...
A.
sulphur
B.
suction air
C.
exhaust gas
D.
discharging air
【简答题】Many nations are restricting emissions of noxious gases. The noxious gases threaten the atmosphere.
【简答题】Identify from which paragraph the information is derived. China is adopting European standards in controlling the emissions of noxious car exhausts.
【单选题】By ( ), besides burning coal, other noxious emissions from industry and vehicles were added to the mix of London’s air pollution.
A.
The mid-19th century
B.
The mid-20th century
C.
The end of 19th century
D.
The beginning of 21st century
【单选题】不同零售业态的区域选址策略各不同,一般情况下,卖场面积在6000平方米以上,大众化衣、食为主,自有品牌的开发比例较大,商品品种4000种左右,低价批量销售,这是什么业态?
A.
超市
B.
大型超市
C.
仓储会员店
D.
百货店
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