更多"The rate of pressure rise during th"的相关试题:
[单项选择]During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.
A. ensure penetration and distribution of the fuel in the combustion chamber
B. ensure the needle valve is flushed clean during each injection
C. prevent combustion gas blowback into the open needle valve
D. prevent reflected pressure waves when the needle valve closes
[单项选择]The average pressure exerted on piston during each power stroke is termed（）
A. indicated horsepower
B. mean effective pressure
C. exhaust back pressure
D. compression pressure
[单项选择]When observing a rapid rise in barometric pressure，you may expect（）.
A. Clear weather with no wind，but the possibility of rain or snow within 24 hours
B. Deteriorating weather with rain or snow
C. Heavy rain or severe thundershowers
D. Clearing weather，possibly accompanied by high winds
[单项选择]A partially full tank causes a virtual rise in the height of the（）.
A. metacenter
B. center of buoyancy
C. center of flotation
D. center of gravity
[单项选择]A slow rise in the barometric pressure forecasts（）.
A. rainy weather for the next 48 hours
B. high seas
C. improving weather conditions
D. deteriorating weather conditions
[单项选择]The approval period for a shipboard Oil Pollution Emergency Plan expires after（）.
A. two years
B. three years
C. four years
D. five years
[单项选择]The approval period for a shipboard oil pollution emergency plan expires after （）.
A. one year
B. two years
C. four years
D. five years
[单项选择]The longer the ignition delay period resulting from improper use of low cetane fuel, the （）
A. less fuel will enter the cylinder
B. higher the cylinder combustion temperature
C. more complete the fuel combustion
D. more rapid the rise in combustion pressure
[单项选择]A virtual rise in the center of gravitty may be caused by（）.
A. filling a partially tank
B. using an on board crane to life a freely swinging heavy object
C. emptying a partially filled tank
D. transferring ballast from the forepeak to the after peak
[单项选择]A virtual rise in the center of gravity of a ship may be caused by（）.
A. filling a partially filled tank
B. using fuel from a pressed fuel tank
C. emptying a partially filled tank
D. transferring pipe from the setback area to the pipe rack
[单项选择]A virtual rise in the center of gravity may be caused by（）.
A. filling a partially filled tank
B. using an on board crane to lift a freely swinging heavy object
C. emptying a partially filled tank
D. transferring ballast from the forepeak to the after peak
[单项选择]What is the default routing update period for RIPv2?（）
A. 15 seconds
B. 30 seconds
C. 180 seconds
D. 240 seconds
[单项选择]When the wave period and the apparent rolling period are the same（）.
A. synchronous rolling occurs
B. roll period decreases
C. roll period increases
D. roll amplitude is dampened
[单项选择]In general，the most effective period for observing stars and planets occurs during the darker limit of（）.
A. sunset
B. civil twilight
C. nautical twilight
D. astronomical twilight
[单项选择]During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure （）
A. effective cylinder scavenging and cooling
B. constant pressure from the turbochargers
C. cooler operation of the exhaust system
D. effective constant pressure for turbocharger operation
[单项选择]The period when both inlet valves and exhaust valves are open is referred to as （）.
A. valve loop
B. valve uniflow
C. valve overlap
D. valve grinding
[单项选择]A rapid rise or fall of the barometer indicates（）.
A. heavy rain within six hours
B. a decrease in wind velocity
C. a change in the present weather conditions
D. that fog will soon set in
[单项选择]If the sump（）were to rise this would indicate water leakage into the oil an d an investigation into the cause must be made.
A. temperature
B. viscosity
C. lever
D. level
[单项选择]Swell is the rise and fall of the ocean’s surface due to（）.
A. fetch
B. distant winds
C. local storms
D. the pull of the moon
