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【单选题】
病人，男性,26岁。因大腿挤压伤合并急性肾衰入院。病人诉心悸，头痛，头晕，查体：颜面,口唇；实脸室检查:血 pH 7.30, 血钾6. Ommol/L，血[Hco₃₋］下降，可能的诊断是A.
代谢性酸中毒
B.
代谢性碱中毒
C.
呼吸性酸中毒
D.
呼吸性碱中毒
E.
低钾血症
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举一反三
【单选题】If a person's eye has been looking at an object in bright sunlight for some time, and then shifts to an object not well lit--such as a lawn or shrub in shadow--we can expect ______.
A.
a time lag in the focusing ability of the eye
B.
some inability to see colors of the latter-named objects until loss of sensitivity has been regained
C.
the immediate loss of the 'afterimage' of the first object
D.
adaptation in the central area of the eye but little adaptation in the lateral areas to the new intensity level
【单选题】（ ）The main idea of the third paragraph is that．
A.
the mass of the fishDecides the intensity of electric power it generates
B.
the strength of shock givenBy a young electric ray can only light theBulb of apocket flashlight
C.
to make full use of the energy producedBy electric fish，suitable wires shouldBeavailable
D.
a mature torpedo is capable of producing enough electricity to knockDown a man
【单选题】In spite of the treatment, the pain in his leg grew in ______ .
A.
gravity
B.
extent
C.
intensity
D.
amount
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