单项选择题
A steep barometric gradient indicates （）.
A.calms
B.light winds
C.strong winds
D.precipitation
点击查看答案
相关考题
-
单项选择题
A stand-on vessel in a crossing situation is allowed to take action when （）.
A.on a collision course
B.the vessels will pass within one mile
C.it becomes apparent to her that the give-way vessel is not taking appropriate action
D.the relative speed of the vessels indicates collision in less than six minutes -
单项选择题
A marker pole，with a horseshoe buoy and a sea anchor attached，should be used to （）.
A.mark the position of a lost mooring
B.determine your vessel's sideslip underway
C.determine your speed through the water
D.indicate location of a man overboard -
单项选择题
（）objects are those which stand out clearly from the background or other objects and are easily identifiable from a few miles offshore in normal visibility．
A.Conspicuous
B.Permanent
C.Preliminary
D.Temporary
