航海英语安全用语章节练习(2018.02.04)

单项选择题
To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.
A.weight of cable to weight of vessel
B.weight of cable to weight of anchor
C.length of anchor to depth of water
D.length of cable to depth of water
单项选择题
Geographic range is the maximum distance at which a light may be seen under（）.
A.existing visibility conditions，limited only by the curvature of the Earth
B.perfect visibility conditions，limited only by the curvature of the Earth
C.existing visibility conditions，limited only by the intensity of the light
D.perfect visibility conditions，limited only by interference from background lighting
单项选择题
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
A.shall
B.should
C.may
D.would
单项选择题
In order to prevent galvanic corrosion，an aluminum boat must be insulated from the davits and gripes. Which of the following is acceptable as an insulator?（）
A.Hard rubber
B.Canvas
C.Leather
D.Sponge rubber
单项选择题
Deficient oxygen content inside a chain locker can be detected with（）.
A.litmus paper
B.a combustible gas indicator
C.an oxygen breathing apparatus
D.an oxygen indicator
单项选择题
The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.
A.SOS，ZZZ，XXX
B.SOS，UUU，SSS
C.SOS，XXX，TTT
D.SOS，TTT，UUU
单项选择题
MV SUDAN/MEAN AT 0200UTC IN POSITION 40.44N 141.52E PASSED A DERELICT ABOUT 40 TONS HALF SUBMERGED AND IS DRIFTING. This cable says that she met with possibly（）.
A.a floating wreck
B.a survivor at sea
C.a man who had fallen overboard
D.a drilling rig
单项选择题
（）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.
A.Urgency signal
B.Safety signal
C.Distress signal
D.None of the above
单项选择题
Proper use shall be made（）radar equipment if fitted and operational.
A.of
B.to
C.on
D.with
单项选择题
Which tool is used to open the strands of fiber lines when making an eye splice?（）
A.Belaying spike
B.Fid
C.Heaver
D.Pricker