更多"When lighting off an auxiliary boil"的相关试题:
[单项选择]The water level of an exhaust gas boiler which is independent of the auxiliary boiler and just as the extra heating surface of it （）
A. will be modulated in proportion
B. will be modulated in proportion and integral
C. will be modulated in proportion and differential
D. will not be modulated at all
[单项选择]After fuel tanks have been topped off, which of the listed procedures should be followed next?（）
A. The pressure-vacuum relief valve should be reset
B. The tanks should be made seaworthy to prevent contamination
C. The tanks should be sounded to make sure the levels are not rising
D. The tanks should be marked with a bull stamp on the manifold filling valve
[单项选择]
When a hydraulic vane pump is working, which of the following is in contact with the vanes?（）
(1) the rotor
(2) the internal surface of the housing
(3) the external surface of the housing
A. (1) only
B. (2) only
C. (1) and (2)
D. (1), (2) and (3)
[单项选择]A vessel brought alongside should be fended off the towing vessel by（）.
A. crew members using their arms
B. crew members using the strong muscles of their legs
C. fenders
D. No fending is necessary due to the rugged construction of most towing vessels
[单项选择]The part of a windlass which physically engages the chain during hauling or paying out is the（）.
A. devil's claw
B. bull gear
C. wildcat
D. cat head
[单项选择]The force exerted by a propeller which tends to throw the stern right or left is called（）.
A. slip
B. sidewise force
C. rotational force
D. thrust
[单项选择]When off loading garbage to another ship, your records must identify that ship by name and （）
A. home port
B. operators name of record
C. official number
D. masters name
[单项选择]When an auxiliary boiler is panting and emitting black smoke, you should （）.
A. increase the fuel oil temperature
B. decrease the fuel oil temperature
C. decrease the fuel oil supply pressure
D. increase the air supply
[单项选择]
Which of the following may hardness of the boiler water cause?（）
(1) scale formation
(2) tube failure
(3) corrosion
A. （1）and（2）
B. （1）and（3）
C. （2）and（3）
D. （1），（2）and（3）
[单项选择]Which one is not the normal operation for boiler shutdown?（）
A. Carry out soot blowing if permissible
B. Change fuel supply to diesel oil
C. Close steam stop valves on boiler when pressure is reduced
D. Drain boiler empty when it has cooled down
[单项选择]How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?（）.
A. With gooseneck vents
B. With warning signs
C. With flame screens
D. With pressure-vacuum relief valves
[单项选择]The water level in the gauge glass when a boiler is operating is （） when the boiler is shut down.
A. lower than
B. higher than
C. below
D. equal to
[单项选择]When the boiler load returns to normal, the drum pressure will rise and steam bubble formation will reduce, causing a fall in water level This is known as （）.
A. swell
B. shrinkage
C. flash off
D. lack of water
[单项选择]（） should be tested and adjusted when the boiler survey is carried out.
A. The boiler oil tank
B. The steam pipe
C. The fire side
D. The safety valves
[单项选择]When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.
A. lower than
B. higher than
C. as much as
D. the same as
[单项选择]When hanging off drill pipe in emergency situations aboard a ship，the preferred location of the drill bit is（）.
A. on bottom with the full drill string in tension
B. one stand (approximately 93 feet) off bottom
C. no deeper than the shoe of the last casing set
D. as close to the surface as possible
