我市生产的惠泉啤酒畅销全国各地，制作啤酒离不开何种微生物的发酵作用（　　）

A．酵母菌

B．醋酸菌

C．乳酸菌

D．青霉菌

（）all ships in a large sea area being alerted, an “area call” will normally be transmitted so that only those ships in the vicinity of the distress incident are alerted.

A.Avoiding

B.To be avoided

C.Avoided

D.To avoid