The voice credit card is an important invention because What is the problem with the model card?

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问题 The voice credit card is an important invention because
What is the problem with the model card?

选项 A、It is too large.
B、It is too thick.
C、It can’t be used in online transactions.
D、It doesn’t have a loudspeaker.

答案B

解析

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职称英语理工类B级

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