何谓革兰阳性和革兰阴性细菌?
参考答案:
细菌涂片后经革兰(Gram)染色镜检为紫蓝色细菌,即为革兰阳性(G+)细菌;镜检为红色细菌,即为革兰阴性(G-)细菌。
—______ I take the magazine away from the reading room?
— No, you mustn’t. You ______ read it only here.
A.Must; must
B.Must; can
C.Need; must
D.May; can
根据我国《企业财务通则》规定,吸收直接投资可分为( )个种类。
A.2 B.3 C.4 D.5