流感嗜血杆菌是一种营养要求较高的细菌,常用的培养是
A.血琼脂培养基
B.牛肉汤培养基
C.巧克力培养基
D.奶油乳糖培养基
E.血清鸡蛋培养基
参考答案:C
喉头的位置相当于()
A.C3
B.C4
C.C5
D.C6
E.C4~6
An old friend of my sister’s always helps my brother and with English.
A.I; our
B.me; ourselves
C.I; my
D.me; our