If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.
The（）enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.
Excessive alkalinity of the water in an auxiliary boiler can cause （）.
The water in an operating auxiliary boiler should be tested for alkalinity and chloride content each（）.
The water level in a steaming auxiliary boiler will always （）
The feed water to the boiler will comprise （）.
What is NOT a function of the steam drum of a marine water-tube boiler（）.
When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.
The valve that prevents water from backing out of the boiler into the feed line is the（）.
In an auxiliary boiler steam and water system, the highest pressure will be in the （）.
The steam boiler is part of a closed loop steam, whereby, after the energy of the steam is used up and it becomes water again, （） is collected and returned back to the boiler for heating up again to steam.
The water in an auxiliary boiler should be tested daily for （）.
The water in an auxiliary boiler should be chemically tested daily for alkalinity and（）
Impurities from the boiler water surface can be removed through the （）.
The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of （）.
You should frequently compare drum-mounted and remote-reading water level indicators（） between these have contributed to failures because of overheating through shortage of water, when a boiler was being oil-fired.
Which of the following statements concerning the water tube and fire tube boilers is not true?（）
Bottom blow valves are installed on auxiliary water-tube boilers to （）
In the event of a flame failure in an auxiliary water-tube boiler, you must（）
The water in an auxiliary boiler should be tested for chloride content to determine （）.
The rate of heat transfer in a water-tube auxiliary boiler can be increased by （）.
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: （） (1) secure oil to fires (2) increase feed pump pressure
The valve that prevents water from backing out of the boiler into the feed line is the______.
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: (1) secure oil to fires; (2) increase feed pump pressure.
