更多"'It was cold yesterday.' '（）it was"的相关试题:
[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]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]During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of （）
A. high fuel oil viscosity
B. low fuel oil temperature
C. high lube oil viscosity
D. energized glow plugs
[单项选择]Cold clearances between the skirt of an aluminum piston and the cylinder liner is about （）
A. twice as large as with a cast iron piston
B. the same size as with a cast iron piston
C. half as large as with a cast iron piston
D. the same size as the crown of an aluminum piston
[单项选择]Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.
A. check and regulate the water level
B. close the air cock once fires are lit
C. blowdown the gage glass
D. crack the steam stop to assure protective steam flow
[单项选择]The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
A. remain constant along the tubes length
B. be greatest in a single pass counter flow heat exchanger
C. remain constant throughout the heat exchanger
D. vary from section to section through out the heat exchanger
[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]Advection fog may be formed by cold air passing over a（）.
A. colder sea surface
B. warmer sea surface
C. dry coastal plains
D. high mountain or plateau
[单项选择]A vessel is proceeding from a very cold climate to a warm climate.With a cargo of non-hygroscopic nature，which of the following is correct?（）.
A. There is danger of heavy cargo sweat if outside air is introduced by ventilation
B. Danger of the ship sweat exists.Constant and vigorous ventilation is required
C. There is little danger of ship's sweat;slight possibility of cargo sweat
D. The possibility of any ship or cargo sweat is remote
[单项选择]The knock occurring when a cold diesel engine is started and continues while running at low speed, but stops when the engine reaches normal operating speed and temperature, is（）.
A. caused by retarded injection timing
B. caused by a mechanical defect in one cylinder
C. caused by high fuel injection pressures
D. normal for these conditions
[单项选择]The cold ocean current which meets the warm Gulf Stream between latitudes 40°and 43°N to form the cold wall is called the（）.
A. North Cape Current
B. Labrador Current
C. Greenland Current
D. North Atlantic Current
[单项选择]Cold weather starting of a diesel engine is more difficult than warm weather starting due to（）
A. use of low viscosity oil in cold weather
B. increased moisture content of inlet air in cold weather
C. increased drag of pistons and bearings due to increased oil viscosity
D. higher compression pressures reached due to smaller clearances existing in the engine during cold weather
