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【多选题】
影响K-均值算法的主要因素有：A.
样本输入顺序
B.
模式相似性测度
C.
聚类准则
D.
初始类中心的选取
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【单选题】听力原文：A: My goodness, the service in this restaurant is really terrible, a lot worse than before. B: Right. It's high time they got rid of half the staff here if you ask me. What can we learn from the ...
A.
Neither of them has a favourable opinion of the service.
B.
The woman is having a terrible time serving in the restaurant.
C.
Both agree it's time for the restaurant to fire some staff.
D.
The man thinks the restaurant is all right, but the woman doesn't.
【单选题】听力原文：M: My goodness, the service in this restaurant is really terrible, a lot worse than before. W: Right. It's high time they got rid of half the staff here if you ask me. What can we learn from the ...
A.
Neither of them has a favorable opinion of the service.
B.
The woman is having a terrible time serving in the restaurant
C.
Both agree it's time for the restaurant to fire some employers.
D.
The man thinks the restaurant is all right, but the woman doesn't.
【多选题】符合风湿性心内膜炎的病变包括:
A.
赘生物内有溶血性链球菌细菌团
B.
赘生物小而附着牢固
C.
赘生物由纤维素、血小板构成
D.
二尖瓣最常被累及
E.
赘生物位于二尖瓣的心房面
【多选题】符合风湿性心内膜炎的病变包括( )
A.
疣赘物内有细菌团
B.
疣赘物小而附着牢固
C.
疣赘物由纤维素血小板构成
D.
二尖瓣最常被累及
E.
疣赘物位于二尖瓣的心房面
【简答题】脊髓上端平 ,成人脊髓圆锥的下端平齐 ,新生儿约平 。
【简答题】脊髓上端平 ,成人脊髓圆锥的下端平齐 ,新生儿约平 。
【简答题】阅读以下说明，根据要求回答问题1～问题3。(25分)【说明】 系统集成PB公司的项目经理老郭将其目前负责的某系统集成项目进行了工作分解，并对每个工作单元进行了成本估算，得到其计划成本。假设各任务同时开工，开工第5天末项目经理老郭对进展情况进行了考核，所形成的阶段性绩效报告如表7-11所示。表7-11中“**表示此处的数据未给出。 【问题1】(9分) (1)请计算该项目在开工第5天末的PV、AC、E...
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