Robots can work 24/7 and keep working at 100% efficiency. On average a 40% increase in the output of a production line occurs when one key person is (9) _______

Robots can work 24/7 and keep working at 100% efficiency. On average a 40% increase in the output of a production line occurs when one key person is (9) _______
A. replace
B. replaced

C. replacing

D. to replace

Trả lời

Đáp án đúng là: C

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