單項選擇題

當(dāng)流量計僅對()燃?xì)庠O(shè)備進(jìn)行計量時,燃?xì)庠O(shè)備的實際最小用氣量作為選擇燃?xì)饬髁坑嫷淖钚×髁浚細(xì)庠O(shè)備的最大用氣量則作為選擇燃?xì)饬髁坑嫷淖畲罅髁俊?/h4>

A.4臺
B.3臺
C.2臺
D.1臺

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