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【单选题】
网织红细胞减少见于A.
上消化道出血
B.
缺铁性贫血
C.
溶血性贫血
D.
再生障碍性贫血
E.
白血病
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皮皮学刷刷变学霸
举一反三
【简答题】硝化作用和反硝化作用
【简答题】在下列项目中，与制造费用属于同一类科目的是（ ）。
【单选题】Sociologists have long recognized that social tensions are______elements of group life.
A.
average
B.
routine
C.
normal
D.
standard
【单选题】The neuroimaging studies show that shyness is______.
A.
a kind of disability due to differences on the brain
B.
something that only emerges in a child in infancy
C.
something that stays with the person for all his or her life
D.
not a learned behaviour—it is innate
【单选题】The author mentioned the tornado in Edmonton, Canada in order to ______.
A.
explain different types of weather
B.
show that tornadoes occur frequently in Canada
C.
indicate the tornado are common in summer
D.
give an example of a damaging storm
【简答题】比较硝化作用和反硝化作用的区别。
【简答题】请写出硝化过程和反硝化过程的反应式,并比较硝化作用和反硝化作用的异同。
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