问题 选择题

0.00067×0.338-(75×0.00000102÷0.00338×0.042)=(  )

A.0.00008

B.0.0008

C.0.000529

D.0.0529

答案

原式=0.0002265-(0.000075÷0.00338×0.042)

=0.0002265-(0.0221893×0.042)

=0.0002265-0.000932

≈0.0008,

故选B.

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