航海英语航海气象基本知识章节练习(2018.01.31)

单项选择题
Clouds that form as small white flakes or scaly globular masses covering either small or large portions of the sky are（）.
A.cirrus
B.cirrostratus
C.altostratus
D.cirrocumulus
单项选择题
（）causing strong winds and rough sea north west Bay of Biscay.
A.Strong low pressure
B.Strong high pressure
C.Steep pressure gradient
D.Steep gradient pressure
单项选择题
MODERATE WAVES，TAKING A MORE PRONOUNCED LONG FORM；MANY WHITE HORSES ARE FORMED.THIS sea condition is likely to be termed（）.
A.moderate breeze
B.fresh breeze
C.strong breeze
D.near gale
单项选择题
The inner cloud bands of a hurricane，when viewed from a distance，form a mass of dense，black cumulonimbus clouds called the（）.
A.bar of the storm
B.eye of the storm
C.funnel
D.front
单项选择题
Clouds appearing in the following order: cirrus，cirrostratus，altostratus，stratus，and nimbostratus usually indicate the approach of a(n)（）.
A.warm front
B.occluded front
C.medium front
D.cold front
单项选择题
In a microbarograph，the pen should be checked and the ink well filled（）.
A.each time the chart is changed
B.once per month
C.once per week
D.daily
单项选择题
In the Northern Hemisphere，gusty winds shifting clockwise，a rapid drop in temperature，thunderstorms or rain squalls in summer (frequent rain/snow squalls in winter) then a rise in pressure followed by clearing skies，indicate the passage of a(n)（） .
A.warm front
B.tropical cyclone
C.anticyclone
D.cold front
单项选择题
On what does the operation of an aneroid barometer depend?（）
A.Thin，metal，air tight cell
B.Curved tube containing alcohol
C.Column of mercury supported by atmospheric pressure
D.Expansion of mercury in a closed tube
单项选择题
In the Northern Hemisphere，an area of counterclockwise wind circulation surrounded by higher pressure is a（）.
A.low
B.high
C.warm front
D.cold front
单项选择题
An instrument designed to maintain a continuous record of atmospheric pressure is a(n)（）.
A.mercurial barometer
B.aneroid barometer
C.barograph
D.thermograph