关于非特异性免疫,下列叙述不正确的是()
A.是机体清除病原体一种机制
B.不牵涉对抗原的识别
C.不牵涉二次免疫应答
D.是一种保护性免疫应答
E.可导致机体组织损伤
参考答案:E
What the remote areas need ____ education to children and what the children need ____ good
textbooks and teachers at the moment. [ ]
A. is; are
B. are; is
C. was; were
D. were; was
制动缸修竣后,储存期超过6个月的,须分解,涂抹硅脂、硅油或润滑脂,经()确认合格后可以装车,不合格者检修。
A.检查员
B.试验台试验
C.验收员
D.试验人员