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【单选题】
中国禁烟运动，损害了英国的利益，于（）年发动侵华战争。战败的清政府被迫签订了我国历史上第一个丧权辱国的不平等条约《中英南京条约》，“天朝大国”开始沦为半封建半殖民地社会。A.
1840
B.
1841
C.
1838
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【单选题】The primary reason organizations engage in downsizing is to:
A.
stem current losses.
B.
promote future competitiveness.
C.
move operations oversea.
D.
thwart unionizing efforts within a given facility.
【单选题】The primary reason for placing covers over storage batteries is to ______．
A.
Prevent the accumulation of explosive gases
B.
Protect the hull from leaking electrolyte
C.
Prevent movement of the battery in rough waters
D.
Protect against accidental shorting across terminals
【单选题】The primary reason low pressure evaporators produce distillate more efficiently, and with less scale formation, than high pressure evaporators is _____.
A.
evaporation is accomplished in a vacuum
B.
due to the higher temperature of the incoming feed
C.
due to the latent heat of evaporation principle
D.
evaporation in a submerged medium produces more distillate
【单选题】The primary reason for using a coupling agent(silane)in a resin composite is to( )
A.
stabilize its shade
B.
improve its physical properties
C.
provide it with a pleasant odor
D.
make it more reflective
【单选题】The primary reason for the popularity of LIFO is that it:
A.
Provides better matching of physical flow and cost flow.
B.
Saves income taxes currently.
C.
Simplifies recordkeeping.
D.
Provides a permanent reduction of income taxes.
【单选题】Accidents are caused; they don't just happen. In hindsight, the primary reason may be easy to see: an overloaded tray, a shelf out of reach, a patch of ice on the road. Still, there are often one or m...
A.
a textbook
B.
a science fiction article
C.
a popular magazine
D.
a manufacturer's report
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