【多选题】关于成熟期产品运营下列说法正确的是?
A.
工作重心是提高用户服务,提高复购率,产品实现周期性爆发。
【单选题】With all his money and friends _____, he was now in great despair (绝望). [ ]
【单选题】Why would the son always fall into despair when writing to his father?
A.
He was not quite sure about his father's attitude toward him.
B.
He still remembered how he had run away from home.
C.
His exile experience left him feeling very negative
D.
He could well imagine how angry his father would be.
【单选题】国内某家电企业,利用自己在商标、技术、市场、资金等方面的优势,通过兼并收购其它家电企业来壮大自己,该企业采用的一体化增长方式属于()
【判断题】利用变异指标比较两个总体平均数的代表性时,标准差越小,说明平均数的代表性越大。
【单选题】Why would the son always fall into despair when writing to his father?
A.
He was not quite sure about his father’s attitude toward him.
B.
He still remembered how he had run away from home.
C.
His exile experience left him feeling vey negative.
D.
He could well imagine how angry his father would be.
【单选题】What became of Temujin after his father's death?
A.
He was driven to despair.
C.
He was reduced to begging for a living.
D.
He was forced to leave his own country.
【简答题】菌物典型的生活史包括( )和有性繁殖两大阶段。