We must make sure that public facilities in the newlybuilt buildings,  like the restroom and the lift, 

 are________to disabled visitors. [ ]

A. impressive  

B. independent  

C. remarkable  

D. accessible

采用给水压力保护法进行停炉保护时，进入锅炉的给水水质要合格保持压力在1.0~1.5MPa。