问题 单项选择题

设计挡墙高度要以运矿汽车轮胎高的()为标准。

A.2/5

B.3/5

C.4/5

D.2/3

答案

参考答案:A

材料题

       1929—1933年的经济危机的特点是什么?面对经济危机资本主义国家走上了哪两条典型道路?其结果如何?

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                             

                                                                                                                                                              

单项选择题