— I want to have the article printed, but I don't know how to use the printer.

— You can follow the ______ on the printer.[ ]

A. directions  

B. determinations  

C. preparations  

D. explanations

当房间楼板布置缝差在60～120mm时，（）。

A．调整板缝宽度

B．沿墙边挑两皮砖解决

C．需要重新选择板的规格

D．不采取补隙措施