更多"The cold ocean current which meets "的相关试题:
[单项选择]On a vessel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds，which is TRUE?（）.
A. Danger of heavy ship sweat exists； constant and vigorous ventilation is required
B. There is danger of heavy cargo sweat if outside air is introduced by ventilation
C. There is little danger of ship's sweat，slight possibility of cargo sweat； moderate ventilation is needed
D. The possibility of any sweat problem，either cargo or ship，is remote
[单项选择]0n a vesel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds, which is true?（）.
A. Danger of heavy ship sweat exists; constant and vigorous ventilation is required
B. There is danger of heavy cargo sweat if outside air is introduced by ventilation
C. There is little danger of ships sweat, slight possibility of cargo sweat; moderate ventilation is needed
D. The po sibility of any sweat problem, either cargo or ship, is frame
[单项选择]In the Northern Hemisphere the major ocean currents tend to flow（）.
A. clockwise around the North Atlantic and North Pacific Oceans
B. clockwise or counterclockwise depending on whether it is warm or cold current
C. counterclockwise except in the Gulf Stream
D. counterclockwise around the North Atlantic and North Pacific Oceans
[单项选择]Your vessel is going from a warm climate to a cold climate with a hygroscopic cargo. Which statement is true?（）.
A. You must ventilate constantly and vigorously to combat ship sweat A.Press up the slack No.1 starboard double bottom tank
B. You should ventilate; there is little danger of ship sweat, but a possibility of cargo sweat
C. There is danger of heavy cargo sweat if you ventilate
D. There is little danger of any sweat problem
[单项选择]The speed of an ocean current is dependent on（）.
A. the density of the water
B. the air temperature
C. the presence of a high pressure area near it
D. underwater soil conditions
[单项选择]The set of the ocean current is caused by（）.
A. density differences of the water
B. rotation of the earth
C. direction of primary circulation of air
D. all of the above
[单项选择]The drift and set of tidal，river，and ocean currents refer to the（）.
A. position and area of the current
B. speed and direction toward which the current flows
C. type and characteristic of the current's flow
D. None of the above
[单项选择]Which statement is TRUE when comparing cold and warm fronts?（）
A. Cold fronts are more violent and of shorter duration
B. Cold fronts are milder and last longer
C. They are very similar with the exception of wind direction
D. Warm fronts are more violent and of longer duration
[单项选择]Which method should be used to warm up the pump turbines prior to discharge（）.
A. Lock the turbine rotor and slowly bleed in steam until operating temperature is reached
B. Run the pump at high speed with the discharge valves closed
C. Run the turbine at slow speed with the pump disconnected
D. Shut the discharge valve and run the pump at slow speed
[单项选择]Freon 12 which is used to produce intense cold is normally a （） when at atmospheric pressure and temperature.
A. liquid
B. gas
C. solid
D. water only
[单项选择]A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT（）.
A. higher than normal swells
B. high winds
C. winds veering from south，through west，to northwest
D. light showers
[单项选择]Excessively warm water leaving condenser may be caused by（）
A. fouled tubes in shell and tube condenser
B. too little or too warm condenser water
C. air or non-condensable gas in system
D. overcharge of refrigerant
[单项选择]To keep injured survivors warm in the water after abandoning a ship，they should（）.
A. be placed in the middle of a small circle formed by the other survivors in the water
B. float on their backs with their arms extended for maximum exposure to the air
C. remove their life preservers and hold on to the uninjured survivors
D. sip seawater at intervals of fifteen minutes
[单项选择]After a cold front passes the barometric pressure usually（）.
A. fluctuates
B. remains the same
C. remains the same，with clouds forming rapidly
D. rises，often quite rapidly，with clearing skies
[单项选择]Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）
A. increase in starting air pressure
B. increase in lube oil viscosity
C. compression expansion device
D. jacket water heater
[单项选择]Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the（）.
A. Alaska Current
B. Subarctic Current
C. Kuroshio Current
D. Oyashio Current
[单项选择]Cyclones that have warm sectors usually move（）.
A. westerly
B. parallel to the isobars in the warm sector
C. toward the nearest high pressure area
D. faster than the accompanying cold front
[单项选择]When attempting to restart a warm high-speed engine, which of the following reactions can you expect?（）
A. Excessive fuel
B. Higher than normal temperatures for star up
C. Longer starting periods
D. Higher than normal lube oil pressure
