问题 多项选择题

隧道工程常见质量问题包括()。

A.洞口坍塌

B.洞口段洞顶出现偏压

C.坍方与冒顶事故

D.衬砌混凝土开裂、拱顶下沉

E.衬砌后隧道顶洞、洞壁渗水及路面冒水

答案

参考答案:A, B, C, D, E

改错题

修改病句。 

(1)在没有上小学以前,他已经认识两百个汉字了。

                                                                                                               

(2)通过观看这部电影,使我受到深刻的教育。 

                                                                                                                     

(3)我把两件新旧棉衣都捐献给了灾区群众。

                                                                                                                      

(4)这次列会的有七十二人左右。 

                                                                                                                          

(5)王大娘头上的头发全白了。

                                                                                                                           

(6)我喜欢喝可乐和饮料。 

                                                                                                                          

(7)虽然他是班长,但是工作很认真。

                                                                                                                         

单项选择题