How does Ron feel after hearing about Bradley Cohen's interview?
A. He is surprise after hearing about Bradley Cohen's stuff.
B. It brings more pressure to him.
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静不定结构中杆件均为轴向拉压构件,则与装配应力大小有关的因素有()
A. 材料
B. 误差
C. 面积
D. 载荷
水泥安定性试样应制作成边缘渐薄、表面光滑的试饼,试饼的直径为( )。
A. 10cm
B. 70—80mm
C. 70mm
D. 10mm