按要求写出本学期你积累的有关句子。   

1．写两句表示为人诚实、守信的名言。     

     (1)                                                                           

     (2)                                                                       

2．写出两句谚语。     

     (1)                                                                    

     (2)                                                                     

3．写出两句探讨人生意义的名言。

     (1)                                                                      

     (2)                                                                      

4．写出两句描写田园风光的古诗词。

     (1)                                                                      

     (2)                                                                      

5．写出两句歇后语。

     (1)                                                                      

     (2)                                                                     

蒸汽采暖系统中常用的疏水器有（）几种。

A.浮筒式

B.波纹管式

C.恒温式

D.热膨胀式