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单选题
229.电磁活门应在图表中显示,并包含一条注释说明活门是由弹簧加载在开位还是关位。
A
See the graphics for information of the solenoid valves which shall contain a note indicating the position of the valve[weather spring-loaded to its open or closed position].
B
Solenoid valves indicated on the schematic shall have a notation indicating when the valve shall be spring-loaded to the open or dosed position.
C
Solenoid valves shall be indicated on the schematic and shall include a notation indicating whether the valve is spring-loaded to the open or dosed position.
答案解析
正确答案：C
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