Suez Canal searchlight, air compressor and air conditioning compressor
Air compressor, boiler blower and refrigeration plant
Boiler blower, Suez Canal searchlight and refrigeration plant
Suez canal searchlight, air compressor and boiler blower
第1题：
The upper piston rings m large, slow-speed, two-stroke/cycle diesel engines are most effectively lubricated by oil ____.
A.fed from mechanical lubricators
B.thrown off from the main bearings
C.supplied from wick fed drip lubricators
D.flow from a centrifugal or banjo oiler
第2题：
For _______the power is supplied by main switchboard directly not through sub-board
A.saving network cost
B.improving the reliability of supplying power to important load
C.preventing sequence reversing
D.increasing the power Factor of important load
第3题：
A、party
B、institute
C、people
D、society
第4题：
Ammeter and changeover switch
Power factor meter
Synchroscope
Reverse sequence relay
第5题：
Ammeter and changeover switch
Speed governor device
Synchroscope
Wattmeter
第6题：
Lubrication for the main reduction gears used with diesel engines is usually supplied by
A.oil from the main engine sump
B.an independent lube oil system
C.the stern bearing head tank
D.the stem bearing sump tank
第7题：
When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the interface clock rate determined（）。
第8题：
A.Distribution board
B.Section board
C.Emergency switchboard
D.Main switchboard
第9题：
Ammeter
Voltmeter
Wattmeter
Synchroscope
第10题：
frequency meter
voltage regulator
governor control
sychroscope switch