— What do you want to do?

— _____________________[ ]

A. It's nice.

B. I want to play ping-pong.

开关柜柜体与基础型钢连接牢固，相邻两柜顶部水平误差<2mm；成列柜顶部水平误差<5mm；垂直误差<1.5mm/m；盘面误差：相邻两柜边<1mm，成列柜面<5mm；柜间接缝<（）mm。