鼠疫耶尔森菌在肉汤培养基中生长,其具有诊断意义的生长现象是()
A.混浊生长
B.絮状沉淀
C.颗粒状沉淀
D.形成菌膜,晃动后呈钟乳石状下沉
E.形成菌膜,菌液澄清
参考答案:D
-You must be excited about going to Japan for schooling.
-_________,but I’m afraid I can’t do well because my Japanese is poor.
A.Never mind
B.Well,I ought to
C.I don’t know yet
D.Certainly not
有机矿质复合体