17. How many nanometers is equal to 7.6 meters?
(A) 76 × 107
(B) 76 × 108
(C) 76 × 109
(D)
(E) 
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統計: A(0), B(29), C(2), D(2), E(0) #2974180
統計: A(0), B(29), C(2), D(2), E(0) #2974180