侵袭力
参考答案：
侵袭力是指致病菌能突破宿主的皮肤、黏膜生理屏障，进入机体并在体内定植、繁殖和扩散的能力。
— How many books are there on the desk?
— ____________[ ]
A. twelve books.
B. Twelve erasers.
C. Twelve books.
ZXSS10 M100的处理能力BHCA最大可以达到（）.
A.30K
B.60K
C.120K
D.160K
