They mark the limits of breakers in that area
These lines warn the mariner of submerged rocks
They mark the boundary lines of fish trap areas
These lines warn the mariner of submerged pipelines
第1题：
On either side of York River Entrance Channel, there are areas bounded by short-long magenta lines and marked by yellow buoys. These areas are ______.
A.fish trap areas
B.designated anchorages
C.spoil areas
D.naval exercise areas
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：
8．—_______ his bike is broken?
—He has to walk there．
A． What about
B． Even though
C． Why
D． What if
第4题：
Between 1638 and 1650 hours this day，strong gusty winds were ______ by my vessel，in consequence of which，the vessel's four mooring lines were broken and her portside gangway severely damaged．
A.gone
B.done
C.had
D.experienced
第5题：
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a ______.
A.fish trap area
B.pipeline
C.demarcation line
D.cable area
第6题：
After updating the system, the system administrator runs the lppchk-v command. During this process, the bos.rte.libc is in a broken state. Which of the following procedures should be performed to fix this problem?（）
A.Reinstall the system
B.Use installp -r to reject the broken fileset
C.Use installp -acgFXd to reinstall the fileset at the same level
D.Use install -u to remove this broken fileset and reinstall it again
第7题：
Which aid is NOT marked on a chart with a magenta circle?
A.Aero light
B.Radar station
C.Radar transponder beacon
D.Radiobeacon
第8题：
A、bred
B、inserted
C、raised
D、broken
第9题：
Between 1830 hrs and 1850 hrs this day，strong gusty winds ______ by my vessel，in consequence of which the vessel's four mooring lines were broken．
A.was experienced
B.were experienced
C.has experienced
D.have experienced
第10题：