14. The machines broke down due to _____ maintenance.
(A) coerced
(B) distinctive
(C) inadequate
(D) exquisite

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統計： A(15), B(55), C(138), D(25), E(0) #2913517

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#5445482
The machines broke d...
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12
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#5987406
The machines broke d...
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5
1