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问题 单项选择题

患者经手术切除肿瘤，术后病理结果报告肿瘤已侵犯包膜。该患者最可能的诊断是

A．淋巴瘤
B．胸腺瘤
C．纵隔型肺癌
D．畸胎瘤
E．Castleman综合征

答案

参考答案：B

选择题

To get a better view of the stage, _________________ .

A．our seats had to be changed

B．we had to change our seats

C．our seats were changed

D．our seats will be changed by us
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问答题 简答题

何谓热处理？根据热处理加热和冷却条件的不同，钢的热处理工艺如何分类？
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