straight line
arc
parabola
hyperbola
第1题：
A line of position derived by radar range from an identified point on a coast will be a(n) ______.
A.straight line
B.arc
C.parabola
D.line parallel to the coast
第2题：
A line of position from a celestial observation is a segment of a ______.
A.circle of equal altitude
B.parallel of declination
C.parallel of altitude
D.vertical circle
第3题：
文中（ 2 ）处正确的答案是（ ）。
A．derived from
B．deviated from
C．was derived from
D．was deviated from
第4题：
The line connecting the Loran-C master station with a secondary station is called the ______．
A.Focus line
B.Base line
C.Side line
D.Center line
第5题：
You are running parallel to the coast and take a running fix using bearings of the same object．If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be ______．
A.Closer to the coast
B.Farther from the coast
C.On the track line ahead of the fix
D.On the track line behind the fix
第6题：
A line of position derived from a loran reading is a section of a(n) ______.
A.straight line
B.arc
C.parabola
D.hyperbola
第7题：
A single line of position combined with a dead-reckoning position results in a(n) ______.
A.estimated position
B.assumed position
C.fix
D.running fix
第8题：
The correction to be applied to a LoranC reading when matching a sky wave to a ground wave may be found______．
A.on loran charts covering areas where sky waves are used
B.in the Radio Aids to Navigation PUB 117
C.in the LoranC Correction Tables
D.Sky waves cannot be matched to ground waves in LoranC to produce a usable reading
第9题：
You are in the process of adding a barge to your tow．A line run from your power capstan and around timber heads on your tow is made fast on the new barge so that it can be pulled into position．This line is called a ______．
A.Scissors wire
B.Capstan line
C.Spring line
D.Fore and aft line
第10题：
mary would like to display a collapsed section on her video catalog form, she has created a section buy when she display the form in the client the section always opens expanded. which one of the following should mary do to collapse the section?（）