更多"A yellow signal，floating in the air"的相关试题:
[单项选择]A yellow signal，floating in the air from a parachute，about 300 feet above the water，indicates that a submarine（）.
A. will be coming to periscope depth
B. will be coming to the surface
C. is on the bottom in distress
D. is in distress and will try to surface
[单项选择]A yellow signal floating in the air from a small parachute，about 300 feet above the water，would indicate that a submarine（）.
A. has fired a torpedo during a drill
B. is about to rise to periscope depth
C. is on the bottom in distress
D. is disabled and unable to surface
[单项选择]A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY DIRECTED TO A RCC GIVING POSITION，IDENTIFICATION，COURSE AND SPEED OF THE VESSEL AS WELL AS THE NATURE OF DISTRESS is known as（）.
A. Distress alert
B. Safety alert
C. Emergency alert
D. General alert
[单项选择]（）process the distress signal from EPIRB to determine its position and identity.
A. COSPAS-SARSAT
B. Ground receiving stations
C. storing distress signal
D. Near-polar orbiting satellites
[单项选择]（）sends a radio signal from the bottom of the ship to the sea-bed,from which it is reflected.
A. The marine sextant
B. The chronometer
C. The echo sounder
D. The radar
[单项选择]The process of removing moisture from air is known as（）.
A. humidification
B. dehumidification
C. vaporization
D. evaporation
[单项选择]The engine is started with （） supplied from air receivers.
A. pressure oil
B. pressure water
C. compressed air
D. cooling water
[单项选择]A signal derived from a controlled function and returned to the initiating point is called a/an （）.
A. monitoring signal
B. inverse signal
C. reverse signal
D. feedback signal
[单项选择]Air blowing from the intake air filter of an operating air compressor indicates （）.
A. broken inlet valves
B. broken discharge valves
C. pulsations in the air distribution system
D. overloading of the air distribution system
[单项选择]Which signal is detected as originating from a SART?（）
A. The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign
B. A line of blip code on a radar screen outward from the SART's position along its line of bearing
C. A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing
D. None of these
[单项选择]（）is the most visible signal of distress from a lifeboat at sea in the daytime.
A. Smoke signal
B. Flash signal
C. Fire signal
D. Radio emergency transmission
[单项选择]The loss of （） from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.
A. lubricating oil
B. compressed air
C. cooling water
D. sealing ring
[单项选择]（）conveys a signal of desired rudder angle from the bridge and activates the power unit and transmission system unit the desired angle is reached.
A. The control equipment
B. The power unit
C. The transmission system
D. The follow-up mechanism
[单项选择]A knocking sound emitted from an unloaded air compressor is probably caused by （）.
A. damaged intake valves
B. excessively tight mounting bolts
C. insufficient cylinder lubrication
D. a loose piston
[单项选择]Intake air flow from a diesel engine turbocharger is directly proportional to engine（）
A. exhaust gas pressure
B. exhaust gas temperature
C. speed
D. load
[单项选择]Purging air from a hydraulic system is necessary when（）
A. adding small amounts of oil to the system
B. the system has been overheated
C. the system has been drained and then filled with new oil
D. the system has been idle for a long period of time
