When the period of beam seas equals the natural rolling period of a vessel,what will most likely occur?()
A、Excessive pitching
B、Excessive yawing
C、Excessive rolling
D、No change should be evident
A、Excessive pitching
B、Excessive yawing
C、Excessive rolling
D、No change should be evident
A、the period of darkness exceeds the period of light B、there is only a partial eclipse of the light C、the periods of light and darkness are equal D、the period of light exceeds the period of darkness
A、the period of darkness exceeds the period of light B、there is only a partial eclipse of the light C、the periods of light and darkness are equal D、the period of light exceeds the period of darkness
A、The period of time in which virtual login attempts are blocked, following repeated failed login attempts B、The period of time in which virtual logins are blocked as security services fully initialize C、A period of time when no one is attempting tolog in D、The period of time between successive login attempts
A、synchronous rolling occurs B、roll period decreases C、roll period increases D、roll amplitude is dampened
A、Light List B、Notice to Mariners C、On the chart D、Coast Pilot
A、if the compass bearing of an approaching vessel does not appreciably change B、even when an appreciable bearing change is evident, particularly when approaching a vessel at close range C、if you observe both sidelights of a vessel ahead for an extended period of time D、All of the above
A、if the compass bearing of an approaching vessel does not appreciably change B、even when an appreciable bearing change is evident, particularly when approaching a vessel at close range C、if you observe both sidelights of a vessel ahead for an extended period of time D、All of the above
A、the inlet valve is open B、the exhaust valve is open C、both valves are close D、both valves are open
A、has continuously for a long period B、suction pressure is below normal C、oil level is below normal D、starts after a long idle period