单项选择题
自助补票机应设置在哪个区域?
A、车站站台
B、站厅非付费区
C、站厅付费区
D、车站办公区
自助补票机应设置在哪个区域?
A、车站站台
B、站厅非付费区
C、站厅付费区
D、车站办公区
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单项选择题
Errors caused by inconsistencies between the discoloration point of an indicator and the stoichiometric point are called ( )
Errors caused by inconsistencies between the discoloration point of an indicator and the stoichiometric point are called ( )
A.random error
B.method error
C.terminal error
D.reagent error