Isogonic lines are lines on a chart indicating ______.
A.points of equal variation
B.points of zero variation
C.the magnetic latitude
D.magnetic dip
第1题：
An organization chart is used ()
A. to show exact figures
B. to show lines of authority
C. to illustrate a procedure
第2题：
Lines on a chart which connect points of equal magnetic variation are called ______.
A.magnetic latitudes
B.magnetic declinations
C.dip
D.isogonic lines
第3题：
Where in the passage does the author compare the energy consumption of skyscrapers with that of a city?
A. Lines 5-8.
B. Lines 14-15.
C. Lines 20-22.
D. Lines 23-25.
第4题：
在岸上，缆绳挽牢在系缆桩上。（）
第5题：
No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines． For more detailed information，the larger scale charts must be ______.
A.referred to
B.appreciated
C.met with
D.concerned
第6题：
All straight lines represent great circle tracks on a chart based on a(n) ______.
A.Mercator projection
B.polyconic projection
C.orthographic projection
D.gnomonic projection
第7题：
How is the annual rate of change for magnetic variation shown on a pilot chart? ______.
A.Gray lines on the uppermost inset chart
B.Red lines on the main body of the chart
C.In parenthesis on the lines of equal magnetic variation
D.Annual rate of change is not shown
第8题：
No navigational aids are shown and chart is not kept corrected for alterations in depths inside the pecked lines．For more detailed information，the larger scale charts must be______．
A.bought
B.analyzed
C.consulted
D.Published
第9题：
A “figure eight”knot is used to ______.
A.be a stopper
B.shorten a line
C.join lines of equal size
D.keep a line from passing through a sheave
第10题：
The （）(系泊缆绳)consist of a head line ,two breast lines, two spring lines and a stern line.