A. mg src="http://p.ananas.chaoxing.com/star3/origin/e8429d108d529ba7081c4946247a3f50.png"> B. (1) C. (2) D. (3) E. (4)
A. mg src="http://p.ananas.chaoxing.com/star3/origin/f2287a9ffec9f938ff9b50f352b4ceaf.png"> B. (1) C. (2) D. (3)
A. mg src="http://p.ananas.chaoxing.com/star3/origin/36969903a2466dc741c0c4fb2e1719d0.png"> B. (2) C. (1) D. (4) E. (3)
A. mg src="http://p.ananas.chaoxing.com/star3/origin/d82da7780c07e67398c1cd149de09616.jpg"> B. (A) C. (B) D. (C) E. (D)
A. mg src="http://p.ananas.chaoxing.com/star3/origin/06c43ac6acca2ba455119fe997b1579b.jpg"> B. (A) C. (B) D. (C) E. (D)
A. mg src="http://p.ananas.chaoxing.com/star3/origin/9c79c1697a079de536ee4d9fee0990cc.jpg"> B. (A) C. (B) D. (C) E. (D)
A. ф8; B. ф10; C. ф160; D. ф200
A. 螺栓 B. 螺钉 C. 垫圈 D. 销钉
A. 小径 B. 中径 C. 大径 D. 螺距
A. 40 B. 8 C. 20 D. 6