更多"The device used for low-pressure co"的相关试题:
[单项选择]The device used for low-pressure control and high-pressure cutout on a compressor is called （）.
A. cutout
B. controller switch
C. pressure controller
D. cutout switch
[单项选择]The device used to limit engine torque at various engine speeds is called a （）
A. speed limiting governor
B. variable speed governor
C. constant speed governor
D. load limiting governor
[单项选择]The device used for preventing the passage of flames into enclosed spaces is called a （）.
A. flame relief valve
B. flame stopper
C. safety valve
D. flame arrester
[单项选择]A device used to tighten up remaining slack in wire rope when you are making up to a tow in inland waters is a（）.
A. tripping line
B. tripping bracket
C. norman pin
D. steamboat ratchet
[单项选择]The device used to store a charged pressure for a hydraulic starting system is called the（）
A. reservoir
B. hand pump
C. accelerator
D. accumulator
[单项选择]A sling is a device used in（）.
A. hoisting cargo aboard a vessel
B. hoisting personnel aboard a vessel
C. securing a small boat to a large vessel
D. hoisting the anchor
[单项选择]A device used to enlarge the size of an existing bore hole, having teeth arranged on its outside circumference to cut the formation as it rotates is a (n)（）.
A. enlarge bit
B. casing bit
C. hole opener
D. casing opener
[单项选择]A hygrometer is a device used for determining（）.
A. the absolute temperature
B. atmospheric pressure
C. wind velocity
D. relative humidity
[单项选择]The safest device used to secure the end of the pendant wire when it is initially passed to the anchor handling vessel is a（）.
A. pelican hook
B. hydraulic deck stopper
C. connecting link
D. shackle
[单项选择]If an emergency pump control is used as the emergency shutdown on a tank vessel，it must（）.
A. stop the flow of oil at the main deck manifold
B. prevent the oil from leaving the shore facility
C. prevent the oil from siphoning through the pump
D. None of the above
[单项选择]To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also（）.
A. prevent any lubricant from reaching
B. prevent excessive lubrication from reaching the combustion space
C. Provide metal-to-metal contact to seal the cylinder against blow-by
D. assure a positive means of scraping carbon accumulation from the cylinder
[单项选择]Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to （）
A. increase the liner area covered by the oil film
B. maintain an oil film on the lower liner where scuffing is prevalent
C. keep excess oil away from intake and exhaust ports
D. help cushion piston skirt side thrust by providing a hydrodynamic oil wedge
[单项选择]Which tensioning device is used with chain to secure heavy vehicles aboard Ro-Ro vessels（）.
A. Chain lever
B. Buckle tensioner
C. Adjust-a-matic tensioner
D. Ratchet tensioner
[单项选择]A device commonly used to secure the pendant wire when it is initially passed to an anchor handling vessel is（）.
A. pelican hook
B. connecting link
C. shackle
D. retaining hook
[单项选择]The radar control used to reduce sea return at close ranges is the（）.
A. gain control
B. sensitivity time control
C. fast time constant
D. pulse length control
[单项选择]The meat box temperature control circuit, as used in ship service refrigeration system, is an example of （）
A. two position control
B. signal speed floating control
C. proportional control
D. reset control
