更多"The dense black cumulonimbus clouds"的相关试题:
[单项选择]In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of（）.
A. rising air currents produced by the warm islands
B. warm air from the sea rising over higher land areas
C. cool land air mixing with warm sea air
D. descending air over the islands
[单项选择]In many areas “atoll” clouds (clouds of vertical development) are produced over small islands. These are the result of（）.
A. rising air currents produced by the warm islands
B. warm air from the sea rising over higher land areas
C. cool land air mixing with warm sea air
D. descending air over the islands
[单项选择]Clouds form（）.
A. as a mass of warm，humid air rises into the atmosphere and cools，condensing moisture into small droplets
B. as winds blow across bodies of water，the sun causes the moisture to be absorbed and move upward forming clouds
C. dry air compresses moisture from the atmosphere into clouds
D. when the relative humidity of the atmosphere is low
[多项选择]Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）
A. optical technology for transmitting up to 32 channels over multiple fiber strands
B. optical technology for transmitting up to 16 channels over multiple fiber strands
C. a WDM system that is compatible with EDFA technology
D. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
[单项选择]In dense fog a vessel without operational radar may not be justified（）at all but should anchor if it is safe and practicable for her to do so.
A. to be underway
B. on under way condition
C. to stop engine
D. in being under way
[单项选择]Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.
A. clearing weather
B. that a warm front has passed
C. probable thunderstorm activity
D. an approaching hurricane or typhoon
[单项选择]Cumulonimbus clouds can produce（）.
A. dense fog and high humidity
B. gusty winds，thunder，rain or hail，and lightning
C. clear skies with the approach of a cold front
D. a rapid drop in barometric pressure followed by darkness
[单项选择]Cirrus clouds followed by cirrostratus then altostratus，stratus，and occasionally nimbostratus indicate the approach of a(n)（）.
A. cold front
B. warm front
C. tropical front
D. occluded front
[简答题]简述组播的sparse和dense的区别。
[单项选择]The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.
A. Wall cloud
B. Nimbostratus cloud
C. Bar
D. Funnel
[单项选择]HIGH WAVES；DENSE STREAKS OF FOAM ALONG THE DIRECTION OF THE WIND；CRESTS OF WAVES BEGIN TO TOPPLE，TUMBLE AND ROLL OVER；SPRAY MAY AFFECT VISIBILITY.This condition is likely to be termed（）.
A. strong breeze
B. near gale
C. gale
D. strong gale
[单项选择]Cumulonimbus clouds are formed by（）.
A. vertical air movements
B. heavy rainstorms
C. horizontal air movements
D. any movement of moist air
[单项选择]Cumulonimbus clouds are most likely to accompany a(n)（）.
A. high pressure system
B. cold front
C. warm front
D. occluded front
[单项选择]Altocumulus clouds are defined as（）.
A. high clouds
B. middle clouds
C. low clouds
D. vertical development clouds
[单项选择]Radar makes it possible for us（）in dense fog.
A. to be sailing
B. sailing
C. sail
D. to sail
[单项选择]Clouds are classified according to their（）.
A. size
B. moisture content
C. altitude and how they were formed
D. location in a front
[单项选择]Cirrus clouds are composed primarily of（）.
A. ice crystals
B. water droplets
C. snow crystals
D. nitrogen
