公路桥梁中的荷载和外力可归纳()、可变荷载和偶然荷载三类。
A.车辆荷载
B.永久荷载
C.汽车制动力
D.人群荷载
参考答案:B
用所给单词的适当形式填空。
1.My mother always ________ (cook) meat for me.
2.He is ________ (read) a book in the living room now.
3.Let's________ (make) a big cake.
4.I always________ (wash) dishes for my mother.
5.He wants to be a ________ (drive) in the future.
坚持实事求是,就是真正坚持了马列主义毛 * * 思想,否则,就是从根本上背离了马列主义毛 * * 思想。