题目内容
What kind of global buckling may occur in the moment plane for the unidirectional flexural solid-web beam-columns? ( )
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For battened beam-columns, the global stability of the column limb can be calculated according to ( ).
What kind of global buckling may occur outside the moment plane for the unidirectional flexural solid-web beam-columns? ( )
When Q345 steel is used for welding components, the type of electrode used shall be .
Grade 1 and Grade 2 welds require a certain amount of ultrasonic inspection, and the detection rate of Grade 1 welds is and the detection rate of Grade 2 welds is 20%.
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