抗原能与相应抗体或致敏淋巴细胞结合的特性称为()
A.免疫原性
B.反应原性
C.抗原性
D.异原性
E.特异性
参考答案:B
对锅炉给水含氧量的限制主要是为了保护()。
A.省煤器
B.给水管
C.水冷壁
D.过热器
A.He didn’t work as hard as he was supposed to.
B.He didn’t pass the physics exam.
C.He did better in an earlier exam.
D.He found something wrong with the exam.