更多"What type of electric motor is most"的相关试题:
[单项选择]What type of valve is used to direct the flow of hydraulic fluid?（）
A. Relief valve
B. Direction control valve
C. Stop valve
D. Pressure control valve
[单项选择]What type of liquid is used in the liquid P/V breaker（）.
A. Hydraulic oil
B. Water-antifreeze mixture
C. Distilled water
D. Oil from the cargo
[单项选择]What type of rotor is used in split-phase motors?（）
A. Dram
B. Salient pole
C. Squirrel-cage
D. Wound-rotor
[单项选择]The type of gauge most commonly used to measure pressure is the （）.
A. bimetallic type
B. diaphragm type
C. bourdon tube type
D. resistance-temperature type
[单项选择]What is the bow type anchor shackle primarily used for（）.
A. Chain to chain connections
B. Chain to anchor connections
C. Kenter link to anchor connections
D. Wire rope connections
[单项选择]What can be used to measure the percentage of oxygen inside a chain locker?（）
A. Flame safety lamp
B. Combustible gas indicator
C. Oxygen indicator
D. H2S meter
[单项选择]What is commonly used to create turbulence in a diesel engine combustion system?（）
A. Shape of the piston crowns
B. Increasing the compression ratios
C. Increasing the piston crowns
D. Increasing the turbocharger gear ratio
[单项选择]What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）
A. Sea anchor
B. Steering oar
C. Spare rudder
D. Daggerboard
[单项选择]What is normally used to pass a mooring line to a dock?（）
A. Distance line
B. Gantline
C. Heaving line
D. Tag line
[单项选择]What color is used to indicate the last shot of anchor chain?（）
A. Red
B. White
C. Blue
D. Yellow
[单项选择]What is NOT used as a stern tube bearing，on a large vessel? （）
A. Wooden (lignum vitae) strips
B. Hard rubber
C. Resin bonded composition
D. Bronze bushings
[单项选择]What would most likely prevent a SART’s signal from being detected?（）
A. Signal absorption by the ionosphere
B. Heavy sea swells
C. The rescue personnel were monitoring the 10-cm radar
D. The rescue personnel were monitoring the 3-cm radar
[单项选择]Hydraulic pumps most commonly used in steering systems are of the （）.
A. lobe type
B. screw type
C. axial piston type
D. volute type
[单项选择]What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.
A. Jacob's ladder
B. Manropes
C. Heaving lines
D. All of the above
[单项选择]Early models of the flash-type evaporators used a separate shell-and-tube heat exchanger as the air ejector condenser.More recent models use a combined air ejector condenser with the（）
A. distilling condenser
B. salt water feed heater
C. distillate cooler
D. flash chamber
[单项选择]The star formation is most commonly used and requires（） on the alternator.
A. one slip-ring
B. two sliprings
C. three sliprings
D. four sliprings
