下列哪种不是正常菌群的作用()
A.营养作用
B.作为与宿主终生相伴的抗原库
C.生理颉颃
D.促进宿主免疫器官发育
E.以上都不是
参考答案:E
1. 在动物园[ ]
A. on a farm
B. at a zoo
C. in the farm
2. 在洞里[ ]
A. in a hole
B. in a forest
C. in arriver
3. 更多的动物[ ]
A. many animals
B. more animals
C. lots of animals
4.晚安[ ]
A. Good morning.
B. Good afternoon.
C. Good night.
5.转身[ ]
A. walk forward
B. walk backward
C. turn around
6. 吃晚饭[ ]
A. have breakfast
B. have supper
C. have lunch
7. 摘桃子[ ]
A. eat peaches
B. pick peaches
C. pick peach
8. 睡觉[ ]
A. get up
B. go to bed
C. go to work
9.上学[ ]
A. at school
B. go to school
C. in the school
10. 多大[ ]
A. how many
B. how much
C. how old
摩托罗拉V998手机的中频模块U913损坏将导致()故障。
A、不开机
B、无时间时钟
C、请插卡
D、无接收