航海英语单项选择题每日一练(2020.04.25)

单项选择题
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
单项选择题
Mariners proceeding across the main routes are recommended to do so at（）.
A.as wide an angle as practicable
B.as wide an angle so practicable
C.like wide an angle as practicable
D.like wide as angle so practicable
单项选择题
The MOST important element in administering CPR is（）.
A.having the proper equipment for the process
B.starting the treatment quickly
C.administering of oxygen
D.treating for traumatic shock
单项选择题
Which general statement concerning radar is FALSE?（）.
A.Raising the antenna height increases the radar range
B.The ability of radar to detect objects is unaffected by weather conditions
C.Radar bearings are less accurate than radar ranges
D.Radar should be checked regularly during clear weather to ensure that it is operating properly
单项选择题
The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.
A.cradle
B.draft
C.harping
D.manger