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【单选题】
通常配制 FeSO 4 溶液时加入少量铁钉,其原因与下列反应中的( )无关A.
O 2 + 4H + + 4e − → 2H 2 O
B.
Fe 3+ + e − → Fe 2+
C.
Fe + 2Fe 3+ → 3Fe 2+
D.
Fe 3+ + 3e − → Fe
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举一反三
【单选题】The pain and temperature sensation in the left face and the pain and temperature sensation in the right trunk are decreased, and the nerve injury is located in
A.
Subcortical white matter region
B.
Internal capsule
C.
Brain stem
D.
Spinal cord
E.
Peripheral nerves
【简答题】Fill in the blanks with words given below and change the form if necessary. ashamed sustain precious delicate concentration Asking for money as a wedding present is very practical, but ca...
【简答题】根据（ ），可以将导游人员分为初级导游人员、中级导游人员、高级导游人员、特级导游人员。
【单选题】Which of the following best defines'higher brain centers'as the term is used in the passage?
A.
The parts of the brain known as the somatosensory cortex, where the sensations of pain are processed.
B.
The pans of the brain whose function is to distinguish the sensory aspects of pain from it suffering aspect.
C.
The parts of the brain known as the anterior cingulate cortex,whose activity is suppressed by hypnosis.
D.
The parts of the brain associated with pain,which appear to be insusceptible to placebo effects.
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