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【单选题】
对于采用EPC-400控制的FOPX型分油机自动控制系统,通过EPC-400控制箱上的控制按钮可以进行________。1报警复位;2起动分油机马达;3控制系统参数设置;4手动排渣;5控制分油机进油;6起动燃油加热器;7起动或停止控制程序A.
①②③④⑤
B.
①③⑤⑥⑦
C.
①②④⑤⑦
D.
①③④⑥⑦
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【单选题】Several days has passed _______ the air crash (空难) happened. [ ]
A.
since
B.
after
C.
as
【简答题】An air waybill has been effective ever since the moment when the consignor(or agent)and the carrier(or agent)give the signature after the waybill is filled．（ ）
【多选题】我国公务员制度的特点是( )
A.
体现了分类管理原则
B.
具有合理的竞争择优机制
C.
具有正常的新陈代谢机制
D.
体现了政治中立原则
E.
具有勤政廉政的约束机制
【单选题】The city suffered the worst US air__________since 1 979．
A.
event
B.
disease
C.
disaster
D.
damage
【单选题】Since air pollutioncreates a negative externality,
A.
social welfare will be enhanced when some, but not all air pollution is eliminated.
B.
social welfare is optimal when all air pollution is eliminated.
C.
governments should encourage private firms to consider only private costs.
D.
the free market result maximizes social welfare.
【简答题】Everyone 1 air. Air is all around us. lt's around us when we go and play. Since we were bom,air has been around us on every side. 2 we sit down,it's aroundus. When we go to bed,air is 3 around us. So ...
【简答题】我国现行公务员制度与国外公务员制度的特点是什么?
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