All persons in this area must use a respirator.
A所有在此区域人员必须使用护目镜。
B所有在此区域人员必须使用防护服。
C所有在此区域人员必须使用呼吸设备。
相关试题
-
All persons in this area must use a respirator.
-
Only approved persons are permitted to stay in this area.
-
Overhaul of any or all components in this chapter must be accomplished with data supplied by the co
-
ul of any or all components in this chapter must be accomplished in a qualified shop in accordance w