简述电泳槽液循环搅拌系统主要功能。
参考答案：
槽液循环搅拌系统有以下三个主要功能：保持涂料均匀混合；防止颜料在槽液中析出、沉淀；保持槽液温度均匀。
哪些设施必须采取防静电接地措施？
(74) systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and (75) on the disk, and controlling peripheral devices such as disk drives and printers.
A．contents
B．directories
C．directions
D．direct
