更多"What separate the high pressure sid"的相关试题:
[单项选择]High pressure and low pressure alarms must be tested（）.
A. no earlier than 24 hours prior to loading
B. no later than 24 hours prior to loading
C. anytime prior to loading
D. weekly
[单项选择]To add refrigerant to the high side of an air conditioning system, you should introduce the refrigerant through the （）.
A. discharge service valve as a vapor
B. suction service valve as a liquid
C. charging valve as a liquid
D. condenser purge valve as a vapor
[单项选择]（）is the depth of the vessel at ship’s side from the upper deck to the lowest point of the keel.
A. Extreme draft
B. Molded draft
C. Extreme depth
D. Molded depth
[单项选择]The period at high or low tide during which there is no change in the height of the water is called the （）.
A. range of the tide
B. plane of the tide
C. stand of the tide
D. reversing of the tide
[单项选择]What is high availability?（）
A. redundant infrastructure
B. clustering of computer systems
C. reduced MTBF
D. continuous operation of computing systems
[单项选择]When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?（）
A. CO2
B. Methyl chloride
C. R-22
D. Sulphur dioxide
[单项选择]High firing pressures and a low exhaust temperature in a diesel engine may result from （）.
A. decreased piston to cylinder head clearance
B. increased exhaust system back pressure
C. early fuel injection timing
D. low scavenge air temperature
[单项选择]The low pressure side of a refrigeration system is considered to exist from the （）.
A. expansion valve to the compressor
B. receiver to the expansion coil
C. expansion valve to the evaporator
D. condenser to the expansion valve
[单项选择]When a vessel is swinging from side to side off course due to quartering seas，the vessel is （）.
A. broaching
B. pitchpoling
C. rolling
D. yawing
[单项选择]A tow astern is veering from side to side on its towline. The best way of controlling the action is to（）.
A. trim the tow by the bow
B. trim the tow by the stern
C. list the tow to windward
D. adjust the length of the towing bridle
[单项选择]To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the （）
A. suction service valve as a vapor
B. suction service valve as a liquid
C. discharge service valve as a vapor
D. charging valve as a liquid
[单项选择]High cylinder firing pressure, accompanied by low exhaust temperature, can result from （）
A. improper fuel rack positing
B. lengthy exhaust valve duration
C. extend operation at light load
D. excessively early injection timing
[单项选择]Low cylinder compression pressure and a high exhaust temperature may indicate （）
A. early fuel injection timing
B. leaking valves
C. a continuously open scavenge air port
D. low cooling water temperature
[单项选择]What is placed on the under side of an inflatable liferaft to help prevent it from being skidded by the wind or overturned?（）
A. Water pockets
B. A keel
C. Strikes
D. Sea anchor
[单项选择]The difference between the heights of low and high tide is the（）.
A. period
B. range
C. distance
D. depth
[单项选择]If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.
A. compressor lubrication will be improved
B. oil will not leave the crankcase
C. compressor valves will be damaged
D. oil may congeal in the evaporator
[单项选择]Low compression results from （）.
A. a worn cylinder
B. broken piston rings
C. either A or B
D. none of the above
[单项选择]On the pole side of the high pressure belt in each hemisphere，the pressure diminishes. The winds along these gradients are diverted by the Earth’s rotation toward the east and are known as the（）.
A. geostrophic winds
B. doldrums
C. horse latitudes
D. prevailing westerlies
