更多"An electrically driven automaticall"的相关试题:
[单项选择]Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
A. increasing the volume of intake air
B. shutting off the fuel supply
C. increasing the engine back pressure
D. over-speeding the engine
[多项选择]Message Driven Bean的特点包括（）
A. 它是匿名的
B. 它具有本地或者远程接口
C. 它由容器异步调用
D. 该Bean完全在一个容器范围内存活，容器管理它的生命周期和环境
[单项选择]According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）
A. 7 knots
B. 10 knots
C. 15 knots
D. 20 knots
[单项选择]Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to（）
A. facilitate bi-directional operation
B. provide the greatest pump efficiency
C. prevent pump clogging from marine growth
D. prevent cavitation at the pump outlet
[单项选择]Upon completion of fueling a gasoline driven vessel it is necessary to（）.
A. keep ports，doors，windows，and hatches closed
B. start engines immediately
C. ventilate before starting engine
D. None of the above
[单项选择]An emergency diesel generator should automatically shut down in the event of （）
A. dangerous over-speeding
B. a loss of lube oil pressure
C. activation of the fixed CO2 system for the emergency generator space
D. all of the above
[单项选择]Modem engines make use of exhaust gas driven turbo-chargers to supply pressurized fresh air for （） and supercharging.
A. scavenging
B. starting
C. cooling
D. blowing
[单项选择]A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.
A. three masthead lights in a vertical line instead of either the forward or after masthead light
B. two masthead lights in a vertical line instead of either the forward or after masthead lights
C. two towing lights in a vertical line at the stern
D. a small white light aft of the funnel
[单项选择]If an electric motor driven air compressor fails to start, it may be due to a （）.
A. leaking discharge valve
B. jammed suction valve
C. tripped overload relay
D. broken discharge un-loader
[单项选择]Before starting a reciprocating, steam-driven pump that has been idle for a period of time, you should （）.
A. open the steam line mot valve
B. drain the steam cylinder
C. close the steam cylinder drains
D. open the liquid cylinder drains
[单项选择]An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）
A. week
B. 2 weeks
C. month
D. 3 months
[单项选择]Burner ignition failure in an automatically fired auxiliary boiler would be caused by（）
A. a burned out solenoid in the oil supply valve
B. high temperature excess air
C. incorrectly setting the hot-well dump valve
D. an incorrectly positioned burner snubber realy
[单项选择]A governor automatically controls engine speed by regulating （）.
A. fuel supply
B. firing order
C. engine load
D. oil level
[单项选择]Ignition failure in an automatically controlled auxiliary boiler could be caused by（）
A. carbon deposits on the flame scanner
B. high fuel oil temperature
C. low fuel oil viscosity
D. high steam pressure
[单项选择]Which one of two crossing power-driven vessels has the right of way in a fog?（）.
A. Both vessels
B. Neither vessel
C. The stand-on vessel
D. The giving-way vessel
[单项选择]A power-driven vessel shall have her engine ready for（）when the visibility is restricted.
A. immediate stopping
B. immediate maneuvering
C. immediate anchoring
D. immediate going astern
[单项选择]When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision,they shall be deemed to be in（）.
A. head-on situation
B. crossing situation
C. overtaking situation
D. close-quarters situation
[单项选择]A hydraulic motor may be driven by （）.
A. an electric motor
B. a diesel engine
C. a compressor
D. oil
