625、尽管压力降低，活门必须保持关闭

Despite the pressure decreases, the switch must stay closed.

Although the pressure decreases, the valve must stay closed.

In spite of the decreases of the pressure, the door must stay closed.

正确答案：B

864、Solenoid valves shall be shown with a notation indicating whether the valve is spring-loaded to the open or closedposition.

863、Rinse the basin with water

862、Remove the sleeve to releasee the sliding tube.

861、 Remove the sealant with a blunt scraper.

860、Remove the pin before you turn the pulley.

859、Rectify the defect before you stop the/pump momentarily.

858、Perform preliminary inspection of all articles that are maintained.

857、Make sure that you turn the control knob counterclockwise.

856、Make sure that you remove all tool and equipment.

855、Make sure that the indication on the gauge agrees with the quantity that is in the tank.

625、 尽管压力降低，活门必须保持关闭