9. I really like your bicycle.
A. racing pink cute
B. cute pink racing
C. pink racing cute
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10. Please take down these curtains!
A. old yellow horrible
B. horrible old yellow
C. yellow old horrible
杆件轴向拉伸或压缩时,其受力特点是:所有的外力或外力的合力沿杆方向作用。
杆件两端受到等值反向且共线的外力作用时,一定产生轴向拉伸和压缩变形。
A. 对
B. 错