网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
The falls on gravity davits are（）.
A
manila
B
nylon
C
wire
D
All of the above
参考答案
参考解析
解析：
暂无解析
更多 “单选题The falls on gravity davits are（）.A manilaB nylonC wireD All of the above” 相关考题
考题
Which of the following is NOT true about the gravity disc?
A.The location of the interface can be changed by exchanging the diameter of the gravity discB.A.larger diameter of gravity disc can cause the interface is far away from bow centerC.disc should not break the The diameter of gravity water sealD.In practice, the use of nomogram is the best oA530 operation
考题
下列描述Android中gravity与layout_gravity说法不正确的是()。
A.gravity是对该view中内容的限定B.gravity是用来设置该view相对于父view的位置C.layout_gravity是用来设置该view相对于父view的位置D.当view在水平线性布局中时，android:layout_gravity属性只有是垂直方向的值才起作用。
考题
What is the purpose of the limit switch on gravity davits?A.To cut off the power when the davits hit the track safety stopsB.To stop the davits from going too fastC.To cut off the power when the davits are about 12 inches or more from the track safety stopsD.None of the above
考题
The righting moment can be determined by multiplying the displacement by the ______．A.vertical center of gravity（KG）B.longitudinal center of gravity（LCG）C.righting arm（GZ）D.center of gravity（CG）
考题
What could be a result of insufficient lubrication of lifeboat winches and davits ________．A.Moisture accumulation in winch motor damaging the electrical wiringB.Freezing of gears in cold weatherC.Corroding of sheaves on the davits so they will not rotateD.All of the above
考题
Frapping lines are fitted to lifeboat davits to ______.A.secure the lifeboat in the davits when in the stowed positionB.bring the life boat close along the rail in the embarkation positionC.give the occupants a safety line when the boat is being lowered from the embarkation levelD.reduce the swinging of the lifeboat at the embarkation level
考题
单选题What could be a result of insufficient lubrication of lifeboat winches and davits?（）A
Moisture accumulation in winch motor damaging the electrical wiringB
Freezing of gears in cold weatherC
Corroding of sheaves on the davits so they will not rotateD
All of the above
考题
单选题The maximum speed of lowering for a lifeboat on gravity davits is controlled by the（）.A
limit switchesB
emergency disconnect switchC
governor brakeD
position of the counterweight on the brake handle
考题
单选题When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.A
to their final position with the winch operating at slow speedB
to the bar stop，and then hand cranked to their final positionC
until just before they make contact with the limit switch，and then hand cranked to their final positionD
to the embarkation deck，and then hand cranked to their final position
考题
单选题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 rubberB
CanvasC
LeatherD
Sponge rubber
考题
单选题Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.A
may jam against the stopsB
will not automatically position the boat at the embarkation stationC
screw may come out of the sheathD
will chafe against the falls and may cause their failure
考题
单选题Preventer bars are fitted on lifeboat releasing hooks to prevent（）.A
the falls from unhooking if the releasing gear is operated accidentally while the boat is being loweredB
operation of the release lever until the boat is waterborneC
the falls from rehooking after they have been releasedD
accidental unhooking when the falls become slack
考题
单选题Limit switches on gravity davits should be tested by（）.A
the engineers，from a panel in the engine roomB
shutting off the current to the winchC
pushing the switch lever arm while the winch is runningD
All of the above
考题
单选题Frapping lines are fitted to lifeboat davits to（）.A
secure the lifeboat in the davits when in the stowed positionB
bring the lifeboat close along the rail in the embarkation positionC
give the occupants a safety line when the boat is being lowered from the embarkation levelD
reduce the swinging of the lifeboat at the embarkation level
考题
单选题The center of the underwater volume of a floating vessel is the（）.A
center of buoyancyB
center of flotationC
uncorrected height of the center of gravity of the vesselD
center of gravity of the vessel corrected for free surface effects
考题
单选题Frapping lines are fitted to lifeboat davits to（）.A
reduce the swinging of the lifeboat as it is being lowered from the embarkation levelB
secure the lifeboat in the davits when in the stowed positionC
hold the lifeboat to the ship's side until the tricing lines are passedD
be used as a safety line in an emergency
考题
单选题On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.A
keep the movement of the davits at the same speedB
keep the davits from slipping when they are in the stowed positionC
prevent vibration during lowering of the boatD
support the manropes
考题
单选题What is the purpose of the limit switch on gravity davits?（）A
To cut off the power when the davits hit the track safety stopsB
To stop the davits from going too fastC
To cut off the power when the davits are about 12 inches or more from the track safety stopsD
None of the above
考题
单选题Which of the following statements describes the relationship between viscosity and specific gravity?（）A
Liquids with different viscosities will always have the same specific gravityB
Liquids with different viscosities will never have the same specific gravityC
Viscosity and specific gravity are directly proportionalD
Viscosity and specific gravity are not related in that one does not define or limit the other
考题
单选题According to the regulations for lifeboat falls，which action must be taken with the falls no later than 5-year intervals?（）A
Proof testedB
End-for-endedC
RenewedD
Weight tested
考题
单选题Which sequence is correct when launching a lifeboat stowed in gravity davits?（）A
Release gripes，turn on emergency disconnect switch，release frapping linesB
Release tricing pennants，turn on emergency disconnect switch，release frapping linesC
Operate limit switches，release gripes，lift brakeD
Release gripes，lift brake，release tricing pennants
考题
单选题Limit switches are used on which davits?（）A
Sheath-screw davitsB
Gravity davitsC
Radial davitsD
Quadrantal davits
考题
单选题What is the main idea ofthe passage?A
Older adults falls are on the rise.B
People should keep quiet about their falls.C
Older adults are losing their independence.D
Older adult falls cause brain injuries.
热门标签
最新试卷