更多"On what does the operation of an an"的相关试题:
[单项选择]In describing engine operation, what does the term “cycle” mean?（）
A. The sequence of events that produce a power pulse
B. One rotation of the engine crankshaft
C. One stroke of a piston
D. All of the above
[单项选择]An aneroid barometer reading should be corrected for differences in（）.
A. elevation
B. temperature
C. wind speed
D. latitude
[单项选择]An aneroid barometer is an instrument（）.
A. used to measure the speed of wind
B. in which the pressure of the air is measured
C. that tells which direction a storm is coming from
D. used to measure the height of waves
[单项选择]Prior to reading an aneroid barometer，you should tap the face lightly with your finger to（）.
A. expose any loose connections
B. demagnetize the metal elements
C. bring the pointer to its true position
D. contract and expand the glass face
[单项选择]An aneroid barometer on a boat should always be（）.
A. located in an air-conditioned area
B. mounted in the passenger compartment
C. protected by a collision bulkhead
D. permanently mounted
[单项选择]What does your father do?（）
A. He is cleaning the street
B. He is forty
C. He is a farmer
D. He is all right
[单项选择]What does blowing tubes accomplish?（）
A. Eliminates unburned fuel oil residues from the firebox
B. Increases boiler efficiency
C. Flushes away mineral deposits inside the water tubes
D. Cleans soot deposits from the inside of the stack
[单项选择]What does EPIRB stand for? （）
A. Emergency Position Indicating Radar Buoy
B. Electronic Pulse Indicating Radiobeacon
C. Emergency Position Indicating Radiobeacon
D. None of the above
[单项选择]What does ECDIS stand for?（）
A. Electrical Chart Display and Indication System
B. Electronic Chart Display and Information system
C. Electric Chart Display and Information System
D. Electronic Chart Display and Indicating system
[单项选择]On navigational aids，what does the light characteristic Fl(2+1) mean?（）
A. A flashing light combined with a fixed light of greater brightness
B. Light flashes combined in groups，with a different number of flashes in each group
C. A light showing groups of two or more flashes at regular intervals
D. A fixed light varied at regular intervals by groups of two or more flashes of greater brightness
[单项选择]What does not contribute to the commercial GPS receiver position error（）.
A. Satellite clock
B. Ship's speed
C. Atmospheric/ionospheric propagation
D. Receiver
[单项选择]What does Peter do?（）
A. He's good at fixing things.
B. He can speak good German.
C. He does the washingup after supper
D. He's a language teacher.
[单项选择]What does salt water draft mean?（）.
A. It means summer draft
B. It means maximum draft
C. It means fresh water draft
D. It means seawater draft
[单项选择]What does the abbreviation VHF stand for?（）
A. Vessel's Hoisting Flag
B. Very High Safety
C. Vessel's Homing Frequency
D. Very High Frequency
[单项选择]What does “VHF” stand for?（）
A. echo sounder
B. radar
C. direction finder
D. radiotelephone
[单项选择]What does a pyrometer measure on a diesel engine? （）
A. Water temperature
B. Water pressure
C. Exhaust temperature
D. Air box pressure
[单项选择]What does the abbreviation SWL stand for?（）.
A. Signal wave letters
B. Ship without light
C. Safe water line
D. Safe working load
[单项选择]What does SSO stand for regarding ship security?（）
A. Ship security office
B. Ship security officer
C. Ship security operator
D. Ship safety office
