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单选题
1022、如果为活门或控制建立符号或图案,这种类型的装置在整个手册中都要用它。使用的符号应在原理图的图例块中显示和标识。
A
If symbol or design is specified for a valve or control this type of device is used throughout the section of the manual.The symbols used can be found and identified in the legend block of the schematic:
B
If a symbol or device is established for a valve or control, it shall be used for this type of unit throughout the manual.The symbols used should be shown and identified in a legend block on the schematic diagram.
C
If a symbol or device has been set up to a valve or control, the equipment type will be referred to as this symbol or device throughout the manual.The legend-block in the diagram displays or identifies symbols or device.
答案解析
正确答案：B
解析：
解析:specified 详述,具体说明;established=set up 建立。schematic diagram 原理图。
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