分析焊接工字形钢梁腹板局部稳定时,腹板与翼缘相接处可简化
A. 自由边
B. 简支边
C. 固定边
D. 转动约束的支承边
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在简支钢板梁桥中，当跨中已有横向加劲，但腹板在弯矩作用下局部定不足，需采取加劲构造。以下考虑的加劲形式何项为正确?_______
A. 横向加劲加密
B. 纵向加劲，设置在腹板上半部
C. 纵向加劲，设置在腹板下半部
D. 加厚腹板
梁的最小高度是由( )控制的.
A. 弯曲
B. 扭转
C. 弯扭
D. 双向弯曲
16
A. They have a stronger sense of social responsibility.
B. They are more likely to succeed in the humanities.
C. They are more likely to become engineers.
D. They have greater potential to be leaders.
17
A. Praise girls who like to speak up frequently.
B. Encourage girls to solve problems on their own.
C. Insist that boys and girls work together more.
D. Respond more positively to boys’ comments.
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