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【单选题】
London underground is now underground transport system in the world, and Moscow Metro is underground system in the world.A.
the largest; very busy
B.
the larger; the busier
C.
large; busy
D.
the largest; the busiest
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【简答题】A glass electrode-SCE pair is calibrated at 25℃ with a pH 4.01 standard buffer, the measured voltage being 0.814V. What voltage would be measured in a 1.00×10 -3 mol/Lacetic acid solution?Assume =[H +...
【单选题】They were ____ by grief when their baby died.
A.
overwhelmed
B.
attacked
C.
embarrassed
D.
misled
【简答题】The modern pH electrode is an example of a ( ) because both the indicator electrode and reference electrode are included with the same device.
【单选题】The potential difference on the pH glass electrode is generated from the difference of ( ).
A.
the features of the inner and outer glass membrane
B.
the concentrations of H + in the inner and outer solution
C.
the activities of H + in the inner and outer solution
D.
the types of the inner and outer reference electrode
【单选题】The actual design of the membrane electrode referred to the pH electrodes cell, in the following convenient writing form is missing. (-) | test solution H + (X=?) | SCE (+)
A.
potential redox
B.
cathode
C.
glass membrane electrode
D.
reference electrode
【单选题】The protein molecule (PI=8.5) will mobile to the positive electrode when the PH of electrophoresis buffer is
A.
PH=5.0
B.
PH=7.5
C.
PH=8.0
D.
PH= 10.0
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