题目内容
（请给出正确答案）
[主观题]
What exercise on the chart is the slowest way to bum calories at any weight（体重)？A．Walkin
What exercise on the chart is the slowest way to bum calories at any weight(体重)？
A．Walking.
B．Golf.
C．Bowling.
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在研磨过程中，研磨压力和研磨速度对研磨效率及质量都有很大的影响。()
