Water as an extinguishing agent was approved by the EPA as an acceptable ______ to halon 1301 in 1994.
Aalternative正確答案
Bultimate
Ccommodity
Dneed
答案與詳解
為什麼答案是 A
alternative (n.) 替代方案/替代品，常搭配介系詞 to。水被核准為海龍 1301 的「替代品」，符合語意與文法。
考點：alternative to 替代考點：ultimate 最終考點：commodity 商品考點：need 需求
載入中…
