航海英语章节练习(2019.06.26)

单项选择题
As the temperature for a given mass of air increases, the（）.
A.dew point increases
B.dew point decreases
C.relative humidity increases
D.relative humidity decreases
单项选择题
A vessel displaying three red lights in a vertical line is（）.
A.not under command
B.aground
C.dredging
D.constrained by her draft
单项选择题
Preferred channel marks are colored with（）．
A.black and green bands
B.red and green bands
C.red and yellow bands
D.yellow and green bands
单项选择题
What is one of the FIRST actions you should take after abandoning and clearing away from a vessel?（）
A.Identify the person in charge
B.Gather up useful floating objects
C.Prepare for arrival of rescue units
D.Arrange watches and duties
单项选择题
In order to detect rot in manila lines，you should（）.
A.feel the surface of the line for broken fibers
B.measure the reduction in circumference of the line
C.observe any mildew on the outer surface
D.open the strands and examine the inner fibers
单项选择题
Fetch is the（）.
A.Distance a wave travels between formation and decay
B.Stretch of water over which a wave-forming wind blows
C.Time in seconds required for two crests to pass a given point
D.Measurement of a wave's steepness
单项选择题
A vessel’s Derat Certificate is always issued by （）.
A.Classification Society
B.Cargo Survey Bureau
C.Environmental Protection Agency
D.Public Health
单项选择题
A major advantage of the NAVTEX system when compared to other systems is that（）.
A.the information can be received on an ordinary FM radio
B.warnings are printed out for reading when convenient
C.broadcasts are at scheduled times
D.a low frequency band is used for long distance transmission
单项选择题
A spreader bar is used to（）.
A.increase the lifting capacity
B.increase the lifting radius
C.protect the slings
D.protect the upper part of a load
单项选择题
A group of crew members standing by in case of an emergency in order to assist other teams in action if necessary is a（）.
A.Fire team
B.Rescue team
C.Emergency team
D.Control team