航海英语航海图书资料单项选择题每日一练(2018.11.07)

单项选择题
As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.
A.by
B.with
C.on
D.in
单项选择题
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
A.SafetyNET
B.NAVTEX
C.NAVAREA
D.VHF R/T
单项选择题
Light Lists for coastal waters are（）.
A.published every year and require no corrections
B.published every second year and must be corrected
C.published every five years and require no correction
D.accurate thru NM number on title page and must be corrected
单项选择题
Which would influence a magnetic compass（）.
A.Electrical wiring
B.Iron pipe
C.Radio
D.All of the above
单项选择题
The step of a pilot ladder which prevents the ladder from twisting is the （）.
A.Proof bar
B.Shifting bar
C.Long bar
D.Spreader