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: 30%, : 70% 84.17 2.9
(b) GB 6932:2001 << >>

= ××(2−1)
× ×
273+

= = 4.19 × 10−3 (( ))
= ()


% 1 2 3 4 5
100% 50%

1 2
110%
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www.info.gov.hk/ i tc /hkas


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