产生IFN-β的细胞是()
A.单核-吞噬细胞
B.B细胞
C.T细胞
D.血管内皮细胞
E.成纤维细胞
参考答案:E
You are saying that the plan will be carried out successfully, and it is ____ I disagree.
A.what
B.that
C.where
D.how
在什么情况下,应悬挂“禁止分闸!”的标示牌?