题目内容

8. My favorite chair isthis one.

A. leather orange
B. orange leather
C. orangeold

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9. I really like your bicycle.

A. racing pink cute
B. cute pink racing
C. pink racing cute

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。

可以反映出轴力沿杆件轴线的变化规律。