A. calculations
B. settings
C. productions
D. innovations
Đáp án đúng: A
Ở phần này, tác giả đưa ra một số phép toán → ta chọn “calculations” (phép tính)
Dịch nghĩa: Sau đây là một số tính toán sơ bộ dựa trên việc sản xuất điện đốt than chỉ dành cho khía cạnh máy tính:
Máy tính xách tay = 50w x 10 giờ một ngày x 365 ngày = 185,5 kilowatt giờ
Máy tính để bàn = 300w x 10 giờ mỗi ngày x 365 ngày = 1095 kilowatt giờ
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