径向止推滑动轴承,工作过程中即承受轴向力也承受径向力的滑动轴承。
参考答案:对
根据首字母提示,填写所缺单词。
Look at the woman i 1 a yellow coat.She is my t 2 . She t 3 me English.She is a good teacher.H 4 name
is Li Bing .Her bike is red.It's u 5 the tree.Her brother,Li Dong is in a black c 6 . His bike is b 7 . Their f 8
are Jack and Mike.They are A 9 .My teacher,Li Dong and their friends a 10 at home now.
1. i 2. t 3.t 4 .H 5. u
6 .c 7. b 8 .f 9. A 10. a
对()必须实施见证取样和送检。
A.承重结构的钢筋连接接头试件
B.用于承重结构的混凝土中使用的掺加剂
C.拌制混凝土的水泥
D.拌制混凝土的砂、石料
E.用于分隔垟的砖和混凝土小型砌块