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Câu hỏi:
What enables pobs to know where they are going?
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A.
ultrasonic sensors
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B.
the screen
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C.
a GPS system
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D.
ultrasonic sensors and a GPS system
Lời giải tham khảo:
Đáp án đúng: D
Dẫn chứng: Powered by electric motors, the pods have ultrasonic sensors and a GPS system that help themselves know where they are going and how to avoid obstacles along the way.
Hãy trả lời câu hỏi trước khi xem đáp án và lời giải -
A.
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
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