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【单选题】
最早出现的数据模型是( )A.
层次模型
B.
网状模型
C.
关系模型
D.
面向对象模型
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：Do you still remember my cousin Brian. He had just graduated from technical school. But he quickly got himself a job, which really astonished us. (28)
A.
Brian would like to graduate from technical school soon.
B.
Brian found a good job after finishing technical school.
C.
Brian wondered who had got the job.
D.
Brian goes to class every day before work.
【多选题】(80～82题共用备选答案)
B.
CEA B．PSA
C.
CAl5—3
D.
NSE B．AFP 80．小细胞肺癌的标志物为 81．前列腺癌的标志物是 82．乳腺癌的标志特是
【单选题】Do you remember where______my watch?
A.
did I put
B.
had put I
C.
I put
D.
have I put
【简答题】按照自己的理解梳理第五章知识。
【简答题】能辅助诊断小细胞肺癌的标志物是A.AFP B.CEA C.NSE D.CA15-3 E.CA19-9 能辅助诊断胰腺癌的标志物是、A.AFP B.CEA C.NSE D.CA15-3 E.CA19-9 能辅助诊断乳腺癌的标志物是A.AFP B.CEA C.NSE D.CA15-3 E.CA19-9
【简答题】下列命令执行后, new_claim 的值是 。 claim= 'This is a good example.'; new_claim=strrep(claim,'good','great')
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