Solenoid valves shall be shown with a notation indicating whether the valve is spring-loaded to the open or closed position.电磁阀应该显示一个标记,表明阀门是弹簧加载到打开还是关闭位置。
A.Solenoid valves shall be shown with a notation. The notation indicates the spring is loaded by the valve to the open or closed position B.Solenoid valves shall be shown with a symbol. The valve indicates whether the valve is spring-loaded to the open or closed position. C.Solenoid valves shall be shown with a mark. The mark indicates whether the valve is spring-loaded to the正确答案C
Open or closed position