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提问人:网友17***580
发布时间:2022-01-07
[单选题]
站内工艺管道采用洁净水进行强度试验时,升压应平稳缓慢、分阶段进行,依次升压至各阶段压力时应稳压()。
A.5min
B.15min
C.30min
D.4h
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共位网友提供了参考答案,
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- · 有4位网友选择 D,占比40%
- · 有4位网友选择 C,占比40%
- · 有2位网友选择 B,占比20%
A.5min
B.15min
C.30min
D.4h
B.selectseq.ROWID from dual
C.selectseq.CURRVAL from dual
D.selectseq.NEXTVAL from dual
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