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【简答题】
当我们对oracle数据库发出startup的命令时，整个实例的启动过程分为（）、（）、（）三个阶段。
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【单选题】下面选项中,用于将表student中字段grade值更新为80的SQL语句是
A.
ALTER TABLE student set grade=80;
B.
UPDATE student set grade=80 where grade=80;
C.
UPDATE student set grade=80 where grade<=80;< /div>
D.
UPDATE student set grade=80;
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乳房纤维腺瘤
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乳腺囊性增生病
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【单选题】女性病人,40岁,近2个月间断出现左侧乳头溢血性液,挤捏乳头时血性溢液增多,无痛,乳房内未扪及肿块。首先考虑的疾病是
A.
乳房纤维腺瘤
B.
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C.
乳管内乳头状
D.
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E.
急性乳房炎
相关题目：
【单选题】下面选项中,用于将表student中字段grade值更新为80的SQL语句是
A.
ALTER TABLE student set grade=80;
B.
UPDATE student set grade=80 where grade=80;
C.
UPDATE student set grade=80 where grade<=80;< /div>
D.
UPDATE student set grade=80;