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【单选题】
小儿,11岁。因身体关节红肿、灼热、疼痛及活动受限1就诊,检查与实验室检查结果,诊为风湿热,建议住院治疗。风湿热典型关节炎的特点A.
侵犯小关节
B.
有关节畸形
C.
有晨僵感
D.
对称性、持续性
E.
游走性、多发性
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【简答题】In the mid-1950s, I was a somewhat bored early-adolescent male student who believed that doing any more than necessary was wasted effort . One day, this approach threw me into embarrassment In Mrs. To...
【简答题】已执行: >student<-data.frame( height=c(180,175,178,168,165), +gender=c("male","male","male","femal","femal")) 计算student中不同性别的同学的平均身高,使用with()函数和aggregate()函数,可写做: with(student,{aggregate(__________,_____...
【简答题】阅读理解。 A typical Chinese Internet user is a young male who prefers instant messaging to e-mail, seldom makes online purchases and favors news, music and s sites. According to a study, about two-thi...
【单选题】A lady meets a male manager in the company, who will offer hands first? If she meets the manager in an evening party, who will offer hands first?
A.
the lady, the male manager
B.
the male manager, the lady
C.
the lady, the lady
D.
the male manager, the male manager
【简答题】已执行: >studentattach(student) 计算student中不同性别的同学的平均身高,使用tapply()函数,可写做: tapply(_________,___________,__________)
【简答题】已执行: >student<-data.frame( height=c(180,175,178,168,165), +gender=c("male","male","male","femal","femal")) 计算student中不同性别的同学的平均身高,使用aggregate()函数,可写做: aggregate(_______,_________,_________) (注释)
【简答题】There were______male actors who appeared with Roberts are mentioned in this passage.
【简答题】已执行: >student<-data.frame( height=c(180,175,178,168,165), +gender=c("male","male","male","femal","femal")) 计算student中不同性别的同学的平均身高,使用tapply()函数,可写做: tapply(____________,______________,_____________)
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