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胁变（strain）
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考题
Which of the listed devices may be used as a digital device?A.variable resistorB.diodeC.strain gaugeD.thermistor
考题
A synthetic mooring line is being heaved on a capstan．There is moderate strain on the line．The line begins to slip．Which of the following should be done？Ⅰ．Stop the capstan and take extra turns．Ⅱ．Have more than one seaman keep a substantial strain on the line and continue heaving easy．A.ⅠonlyB.ⅡonlyC.Both Ⅰand ⅡD.Neither Ⅰ nor Ⅱ
考题
The preventer guy，as used on a conventional yard and stay rig，______．A.Is rigged at an angle of 70° to 90° from the guy it assistsB.Takes the strain imposed on the schooner guy when burtoning cargoC.Is rigged when lifting cargo that exceeds the SWL of a single whipD.Should take the strain if the regular guy parts
考题
单选题Thrillers and action movies only succeed if they do not strain our ______ too much.A
credenceB
credulityC
credibilityD
creed
考题
单选题In order to pay out or slack a mooring line which is under strain，you should（）.A
sluice the lineB
surge the lineC
stopper the lineD
slip the line
考题
单选题A wire rope that has been overstrained will show（）.A
a bulge in the wire where the strain occurredB
a decrease in diameter where the strain occurredC
a kink in the wire where the strain occurredD
no visible effects of an overstrain
考题
单选题When anchored，increasing the scope of the anchor chain normally serves to（）.A
prevent fouling of the anchorB
decrease swing of the vesselC
prevent dragging of the anchorD
reduce strain on the windlass
考题
单选题Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?（）A
Bow lineB
Breast lineC
Spring lineD
Stern line
考题
单选题Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should（）.A
not exceed bare steerageway during the transitB
take a strain as soon as you can to control the towC
come up to speed very slowly and maintain a safe speedD
come up to speed quickly，then cut back power considerably to ease the strain
考题
单选题The latch of a safety hook（）.A
increases the strength of the hookB
prevents the sling ring from coming out of the hook if the strain is abruptly easedC
prevents the sling ring from coming out of the hook if there is a strain on the sling ringD
All of the above
考题
单选题If kinking results while wire rope is being coiled clockwise，you should（）.A
coil it counterclockwiseB
not coil itC
take a turn underD
twist out the kinks under a strain
考题
单选题The preventer guy，as used on a conventional yard and stay rig，（）.A
is rigged at an angle of 70°to 90°from the guy it assistsB
takes the strain imposed on the schooner guy when burtoning cargoC
is rigged when lifting cargo that exceeds the SWL of a single whipD
should take the strain if the regular guy parts
考题
单选题If the towline parts，you should（）.A
start towing by pushing aheadB
abandon the towing vesselC
retrieve the tow bridleD
relieve strain on the retrieving line
考题
单选题In anchoring orders, walk back the chain means（）.A
pay away the chainB
take in the chainC
check up the chainD
take a strain on the chain
考题
单选题When checking a mooring line，you should（）.A
ensure the bight is not fouled between the ship and the dock by taking up slackB
pay out slack smartly and keep free for runningC
secure more turns to hold the line against any strain，then clear the areaD
surge the line so that it maintains a strain without parting
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