MongoDB有哪些是副本集成员?
A. Primary
B. Slave
C. Secondary
D. arbiter
MongoDB数据删除后产生碎片可采用何种手段修复?
A. compact
B. monodump
C. move
D. restore
MongoDB写入策略包括?
A. Unacknowledged
B. Acknowledged
C. Journaled
D. Replica Acknowledged
下列哪种疾病不是多基因遗传病
A、先天性幽门狭窄
B、先天性心脏病
C、精神分裂
D. 多指