AQI的计算是从各项污染物的IAQI中选择最大值确定为AQI。
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Listen to the conversation and choose the correst answer.[音频]
A. $20.5
B. $12.5
C. $2.5
D. $20
Listen to the conversation and choose the correst answer.
A. $15.95
B. $50.95
C. $55.95
D. $15.59
Listen to the conversation and choose the correst answer.
A. $157.4
B. $15.74
C. $175.4
D. $17.54
Listen to the conversation and choose the correst answer.
A. $50.80
B. $15.80
C. $15.08
D. $50.08