产单核李斯特菌经革兰染色,正确的是()。
A.幼龄菌呈阳性
B.幼龄菌呈阴性
C.陈旧培养物、幼龄菌均呈阳性
D.陈旧培养物、幼龄菌均呈阴性
E.陈旧培养物呈阳性
参考答案:A
David is __animal fur, so he won’t visit anyone who has cats or dogs in the house.
A.curious about
B.allergic to
C.satisfied with
D.food of
债权拍卖的概念