试题与答案

双组份涂料

题型:名词解释

题目:

双组份涂料

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:alone is sufficient because it gives 1971 as the only answer. (2) alone is insufficient, because the conditions stated could apply to either 1971 or 1972.

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