搜题请搜索小程序“爱下问搜题”
问题 单项选择题

控制型转向架等摇枕、侧架，应在配件制造质量保证期限（）内无裂损、铸造缺陷不超限。

A.5年

B.6年

C.8年

D.9年

答案

参考答案：A

改错题
短文改错。
     此题要求你对一段文章改错。先对每一行做出判断是对还是错。如果是对的，在该行右边横
线上画一个勾（√）；如果有错误（每行不会多于一个错误），则按情况改错如下：
此行多一个词，把多余的词用斜线（＼）划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。
My English teacher was always too absorbed in the text in     
class that he never looked up. He had habit of asking a        
student to translate the text, and he often choose the same   
student without realizing them himself. The student, out      
of respect, didn't point it out. Before being called so many  
times, the student, his name was Jack, had to ask his friends 
for advices. The next day when the teacher asked Jack to      
translate the text, Jack answering, "He is absent today,     
because of he has a sick sister to look after at home".     
"All right," said a teacher, "you translate the text." 		1.______      
2.______               
3.______     
4.______           
5.______                                        
6.______      
7.______                
8.______      
9.______          
10.______   
查看答案
单项选择题

妊娠期口腔保健要做到（）

A.窝沟封闭无龋磨牙

B.药物预防牙龈炎

C.及时补充氟滴剂

D.口腔X线检查

E.定期口腔健康检查
查看答案