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计算题:已知梁的截面尺寸为b×h=250mm×450mm,安全级别为II级(安全系数1.2);受拉钢筋为4根直径为16mm的HRB335钢筋(抗拉强度设计值300N/mm 2 ),A s =804mm 2 ;混凝土强度等级为C40(抗压强度设计值19.1N/mm 2 );承受的弯矩设计值M=59kN•m。环境类别为一类(c=30mm)。按SL-2008规范验算此梁截面是否安全。
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【单选题】为保证封口质量一般调节火焰温度在( )。
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750℃左右
B.
1200℃左右
C.
1300℃左右
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【单选题】为保证封口质量一般调节封口温度在
A.
1400℃左右
B.
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1200℃左右
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【单选题】为保证封口质量一般调节封口温度在
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1000℃左右
B.
1200℃左右
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1300℃左右
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1400℃左右
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【单选题】Quinones' father advised him to ________.
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【单选题】Dave his father ,but his father wouldn’t listen. [ ]
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【单选题】At last, I ______ my father to give up smoking, and I was happy. [ ]
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advised
B.
persuaded
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【简答题】Father advised me not to say anything until ______ at the meeting. A) asking B) to ask C) asked D) ask
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【单选题】-Last month Shirley advised her father to buy her brother ________MP4 as a birthday present. -_______ useful advice it was!
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a; How
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an; What
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相关题目:
【单选题】为保证封口质量一般调节火焰温度在( )。
A.
750℃左右
B.
1200℃左右
C.
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【单选题】为保证封口质量一般调节封口温度在
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【单选题】为保证封口质量一般调节封口温度在
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【单选题】Quinones' father advised him to ________.
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pursue education
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【单选题】Father advised me not to say anything until ______at the meeting.
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【单选题】脾组织结构中的边缘区位于
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脾索的周缘
B.
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【单选题】Dave his father ,but his father wouldn’t listen. [ ]
A.
persuaded;out of smoking
B.
advised;out of smoking
C.
tried to persuade;not to smoke
D.
persuaded;not to smoke
查看完整题目与答案
【单选题】At last, I ______ my father to give up smoking, and I was happy. [ ]
A.
advised
B.
persuaded
C.
hoped
D.
suggested
查看完整题目与答案
【简答题】Father advised me not to say anything until ______ at the meeting. A) asking B) to ask C) asked D) ask
查看完整题目与答案
【单选题】-Last month Shirley advised her father to buy her brother ________MP4 as a birthday present. -_______ useful advice it was!
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a; How
B.
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查看完整题目与答案