单项选择题

A．A chemistry assignment.
B．A study that their chemistry professor did.
C．A class that the woman is taking.
D．A job possibility.
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单项选择题
Which of the following methods is the least psychologically acceptable
A．Photographs.
B．Lipprints.
C．Fingerprints.
D．Voiceprints.
单项选择题
Which of the following is NOT mentioned as one of the identification system requirements
A．Convenience.
B．Reliability.
C．Low costs.
D．Acceptability.
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