对于四种超敏反应,I、II、III型超敏反应由抗体介导,IV型超敏反应由T细胞介导。 (本题5分) A. 对 B. 错
A.
正确
B.
错误
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举一反三
【简答题】assessed indicators numerous undermines consistent We also contrasted workers with non-workers, on different _______ of their commitment to education.
【单选题】听力原文:M: Are we short of tea and coffee? W: Oh, yes. And we also need some vegetables, too. It's the next item on the list. Q: What do they not need to buy? (3)