某屋面檩条跨度6 m，中间设一道拉条作为侧向支承点，作用于檩条的弯矩设计值Mx= 45.O KN·m，My=0.9
A. 149.8 N/mm2
B. 164.9 N/mm2
C. 189.1 N/mm2
D. 208.2 N/mm2
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We used to believe that life could not exist under extremely hot or cold environment.
A. Y
B. N
C. NG
下图所示体系可用()。
A. 二刚片规则分析为几何不变体系
B. 二刚片规则分析为几何瞬变体系
C. 三刚片规则分析为几何不变体系
D. 三刚片规则分析为几何瞬变体系
Word2003的查找和替换功能很强，下列不属于其功能的是_______。
A. 能够查找和替换带格式或样式的文本
B. 能够查找图形对象
C. 能够用通配字符进行快速、复杂的查找和替换
D. 能够查找和替换文本中的格式
A．Cats are very particular about places for rest.B．Cats are pretty good at looking aft
A. Cats are very particular about places for rest.
B. Cats are pretty good at looking after themselves,
Cats like roaming about and sleeping wherever they like.
D. Cats require special care from their masters.
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