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【单选题】
关于免疫耐受的叙述,下列哪项是 错误 的
A.
可天然形成
B.
可后天获得
C.
可长期存在
D.
无抗原特异性
E.
是一种免疫无应答状态
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A.
要在正常呼气末进行测量
B.
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A.
支票
B.
本票
C.
见票后定期付款的汇票
D.
银行汇票
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