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An ocean towing bridle whose legs are of equal length,but too short,may ______.
A.fail to provide spring in the hawser
B.cause unequal distribution of the load to one leg
C.cause the bridle legs to jump clear of the chocks or fairleads
D.None of the above
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更多 “ An ocean towing bridle whose legs are of equal length,but too short,may ______.A.fail to provide spring in the hawserB.cause unequal distribution of the load to one legC.cause the bridle legs to jump clear of the chocks or fairleadsD.None of the above ” 相关考题
考题
A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain ______.A.is more flexible and has the ability to absorb shock because of its weightB.is less subject to wear and damage from abrasionC.requires little maintenanceD.All of the above
考题
The choice of length of tow bridle legs is governed by the ______.A.Expected towing forcesB.Capability of retrieving gearC.Freeboard of the unit being towedD.Need to reduce yaw
考题
A tow astern is veering from side to side on its towline.The best way of controlling the action is to ______.A.Trim the tow by the bowB.Trim the tow by the sternC.List the tow to windwardD.Adjust the length of the towing bridle
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A bridle for an ocean tow consists of ______.A.two chains of equal lengthB.a single nylon pendant rove through a heavy ring free to move on the pendantC.two long legs of wire rope shackled to a fishplateD.a single length of heavy chain with both ends secured on deck to welded pad eyes
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It is not advisable to use nylon for alongside towing because it ______.A.is too expensive for everyday towing usageB.binds on the cleatsC.parts too readilyD.stretches too much
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Oh, the box is too heavy()A、What‘s in it?B、Can I help you to carry it.C、Whose is it?D、May I have a try.
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单选题When towing,what is the main reason for using a chain bridle on a wire hawser().A
It makes for an easy connectionB
It gives a spring effect to cushion the shockC
It eliminates the necessity of a swivelD
It does not chafe
考题
单选题One advantage of chain over wire rope for a tow bridle is that chain().A
is better suited for inland towingB
resists damage from chafingC
handles more easilyD
equalizes towing forces better
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单选题An ocean towing bridle should().A
have equal legs of sufficient lengthB
have a large angle between the legsC
be formed on a bight of cable through a ringD
never be made up of chain
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单选题To prevent vibration damage to the fuel supply line of a diesel engine, you may use ().A
a short length of heavy duty clear plastic tubingB
a length of approved flexible nonmetallic hoseC
welded flange connections for all jointsD
aluminum piping with expansion loops
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单选题An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful. Which action should now be taken? ()A
Abandon the towing vesselB
Radio for emergency assistanceC
Slip the towline and allow it to run off the drumD
Secure all watertight openings on the towing vessel
考题
单选题The choice of length of tow bridle legs is governed by the().A
expected towing forcesB
capability of retrieving gearC
freeboard of the unit being towedD
need to reduce yaw
考题
单选题A bridle for an ocean tow consists of().A
two chains of equal lengthB
a single nylon pendant rove through a heavy ring free to move on the pendantC
two long legs of wire rope shackled to a fishplateD
a single length of heavy chain with both ends secured on deck to welded pad eyes
考题
单选题On a long ocean tow,the bridle should be made up of two equal lengths of().A
chainB
wireC
nylonD
manila
考题
单选题The catenary().A
acts as a reserve length of towing hawser when the tug applies more power,and it dampens the surge effect of the towB
gives an approximation of the amount of strain on the towing hawserC
is the dip in the towing hawser between the tug and the towD
All of the above
考题
单选题The biggest problem encountered when towing bridle legs are too short is().A
retrievalB
adjusting tensionC
excessive strainD
hookup to main towline
考题
单选题An ocean towing bridle whose legs are of equal length,but too short,may().A
fail to provide spring in the hawserB
cause unequal distribution of the load to one legC
cause the bridle legs to jump clear of the chocks or fairleadsD
None of the above
考题
单选题If the towing bridle legs are not of equal length().A
excessive strain is placed on the shorter legB
the shorter leg may failC
the longer leg is slackD
All of the above
考题
单选题What is used to prevent twisting of a towing bridle?()A
A bittB
A bulkheadC
A V-springD
A fishplate
考题
单选题The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to().A
one-half the SWL of the main towing hawserB
three-fourths the SWL of the main towing hawserC
that of the main towing hawserD
twice that of the main towing hawser
考题
单选题In towing,heaving lines are used for().A
passing a tow bridle to the tugB
passing a messenger lineC
heaving in the tow bridleD
service lines with rocket line throwers
考题
单选题A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain().A
is more flexible and has the ability to absorb shock because of its weightB
is less subject to wear and damage from abrasionC
requires little maintenanceD
All of the above
考题
单选题A tow astern is veering from side to side on its towline. The best way of controlling the action is to().A
trim the tow by the bowB
trim the tow by the sternC
list the tow to windwardD
adjust the length of the towing bridle
考题
单选题It is not advisable to use nylon for alongside towing because it().A
stretches too muchB
is too difficult to make fastC
parts too readilyD
is too susceptible to mildew
考题
单选题It is not advisable to use nylon for alongside towing because it().A
is too expensive for everyday towing usageB
binds on the cleatsC
parts too readilyD
strethes too much
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单选题To reduce stress on the towing hawser when towing astern (ocean tow),the hawser should be ().A
secured to the aftermost fitting on the towing vesselB
just touching the waterC
underwaterD
as short as possible
考题
单选题As seen from the tow,what should connect the leading ends of both towing bridle legs to the main towing hawser?()A
A cable clampB
A fishplate,flounder,or towing plateC
A pad eyeD
The towing bitts
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