45
60
90
100
第1题:
材料:
While berthed alongside in Tenerife,the cruise ship Arcadia was carrying out a lifeboat drill.One lifeboat was successfully launched and as it was being recovered,the winch hoisting it failed.The lifeboat was still connected to the falls and it dropped back into the sea. To investigate what had happened,the crew had to wind the falls back onto the winch drum.The lifeboat was disconnected while the crew tried to restart the winch.They were unsuccessful because of a fault on the hand crank cutout switch.
The crew then attempted to wind the falls back on using the hand crank,but because of the time and effort involved,the cutout switch was bypassed and power restored to speed up the operation.The crank handle was left in place. The winch was started.It began to turn and so too did the handle which hit one of the crew over the head.
The investigation found that the winch failed in the first place because the oil used in the winch gearbox was not one recommended.It was too viscose and would have prevented the coupling locking mechanism from operating correctly.
问题:
It was the fault on the ________ that caused the failure to recover the lift boat
A.crank handle
B.hand crank cutout switch
C.power system
D.falls
It was the ________ that hit the crewmember on his head.A.falls
B.hand crank cutout switch
C.crank handle
D.winch drum
The cause of the accident was that ________.A.the oil used in the winch gearbox was too viscose
B.the winch drum was connected with the falls
C.the life boat was too heavy
D.the bypass to the cutout switch was misused by the crew
The lesson from this accident is that ________.A.seafaring is not all about facing unforeseen situations
B.it is not necessary to wear hard hats to prevent sore heads
C.the wrong oil can not have serious repercussions
D.do not start lifeboat winch motors with the crank handle in place
请帮忙给出每个问题的正确答案和分析,谢谢!
第2题:
“MasterCrank”和“MasterStart”电门的功能有何不同
第3题:
On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).
A.a spindle lubricator
B.an oil jet
C.internal splashing
D.drilled passages in the crankshaft
第4题:
journal
crank-pin
main bearing
large end of connecting rod
第5题:
shrunk into
expanded into
extended into
designated into
第6题:
crank
第7题:
机组如何对发动机进行冷转操作()
第8题:
The distance between any two meridians measured along a parallel of latitude and expressed in miles is the ______.
A.difference in longitude
B.mid-longitude
C.departure
D.meridian angle
第9题:
being shrunk into
to be shrunk into
to be shrunk with
shrinking into
第10题:
hydraulic system
pneumatic system
spare battery
hand crank