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【单选题】
,女,27岁,停经56天。突然发生剧烈腹痛伴恶心、呕吐,阴道有少量流血,有排便感。体检:血压72/48mmHg,下腹压痛(+),宫颈举痛(+),下腹部有移动性浊音,最可能诊断为A.
先兆流产
B.
异位妊娠
C.
急性阑尾炎
D.
难免流产；不全流产
E.
不全流产
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【单选题】As for air quality indoors, Australians suffer a higher concentration of pollutants than people in other regions.
A.
Y
B.
N
C.
NG
【单选题】The higher the cetane number, _____ the ignition quality of the fuel.
A.
the worse
B.
the better
C.
the smaller
D.
the greater
【单选题】With economy increasing steadily, people ______ enjoy a life of higher quality.
A.
should
B.
can
C.
may
D.
must
【单选题】Fuels of high quality with their earlier ignitions will cause higher _____ pressure in cylinders of a diesel engine.
A.
compression
B.
maximum
C.
rated
D.
oil
【简答题】在入栈时,应先判别栈是否为____;在出栈时,应先判别栈是否为____。
【多选题】What quality issues differentiate higher-quality watches from lower-quality ones? Higher quality watches _________.
A.
keep good time
B.
are resistant to water and shocks
C.
are made from more expensive, better-looking materials
D.
are made from non-metallic alloy.
【单选题】In author's opinion, the sudden appearance of higher-quality goods suggests its officials ______.
A.
become more concerned about the quality and domestic market
B.
turn to other ways to stimulate and enforce export rules
C.
have to improve goods' quality for the qualification of exports
D.
want consumers to buy better products at low prices
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