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单选题
The cross-head shoes are white metal lined, grooves being cut horizontally on the face of the white metal to ensure （）.
A
an adequate supply of lube oil
B
an adequate supply of fuel oil
C
an adequate supply of turbine oil
D
an adequate supply of cylinder oil
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考题
9． —How much are these white shoes?—_________．A．It's 10 yuanB．It's 10 yuansC．They're 10 yuanD．They're 10 yuans
考题
BHave a look at that funny(滑稽的) salesman(售货员)． He wears a tall black hat，big white shoes and red socks． He also wears a skirt! It-s red and white． Look at his green sweater! It's so big． All the things are on sale， do you know? The hat is only 5 dollars． The skirt is 15 dollars． The sweater is 30 yuan． The shoes are 10 yuan and the socks are only two yuan．，( )26． The socks areA．￥10B．￥2C．white and redD．white
考题
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white?A.A vessel engaged in diving operationsB.A pilot vesselC.A vessel trawlingD.All of the above
考题
A single vessel being towed alongside shall exhibit ______.A.one all-round white lightB.sidelights and a stern lightC.only the outboard sidelight and a stern lightD.a masthead light，sidelights，and a stern light
考题
A vessel servicing a pipeline during the day shall display ______.A.three black shapes in a vertical line; the highest and lowest are balls，and the middle one is a diamondB.three shapes in a vertical line; the highest and lowest are red balls，and the middle one is a white diamondC.three black balls in a vertical lineD.two black balls in a vertical line
考题
A vessel towing a barge astern would show，at the stern ______.A.only a stern lightB.a towing light above the stern lightC.two towing lights in a vertical lineD.two white lights in a vertical line
考题
The Coordinator Surface Search（CSS）in a SAR situation should display by night ______．A.Deck lights forward and aftB.A white light over two red lightsC.A red light，white light，and blue light in a vertical lineD.A distinctive signal promulgated by the CSS
考题
The word "springs" in Paragraph 3 meansA a small stream of water flowing naturally from the earth.
B the season of the year，occurring between winter and summer.
C the act or an instance of jumping or leaping.
D a length of metal wound around，which returns to its original shape after being pushed.
考题
单选题Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）A
A vessel engaged in diving operationsB
A pilot vesselC
A vessel trawlingD
All of the above
考题
单选题As to the bearing, of the following, which statement is not true?（）A
ff overheat is found, the engine must be stopped for inspectionB
Much heat of the crankcase door indicates that the bearing is overheatedC
If bearing clearance is too large, knocking will be heard in the crankcaseD
If bearing clearance is too large or too small, the white metal may be melted
考题
单选题A vessel being pushed ahead is required to carry which of the following lights?（）.A
Sidelights and a stern lightB
Sidelights onlyC
Sidelights and a small white light at each endD
A small white light at each end
考题
单选题To our surprise, the walls of the new bookstore ______ books.A
are lined withB
is lined withC
have lined with
考题
单选题A single vessel being towed alongside shall exhibit（）.A
one all-round white lightB
sidelights and a stern lightC
only the outboard sidelight and a stern lightD
a masthead light，sidelights，and a stern light
考题
单选题A single vessel being towed alongside shall exhibit（）.A
one all-round white lightB
sidelights and a sternlightC
only the outboard sidelight and a sternlightD
a masthead light，sidelights，and a sternlight
考题
单选题The most critical part of the bunkering operations, which can result in an oil spill, is when the （）A
hose joints are made upB
tanks are being topped offC
system is being lined upD
pumping operation is first started
考题
单选题The lower end of each piston rod is reduced in diameter to fit a bore in （）, this being secured to the piston rod by a nut.A
the crank-webB
the connecting rodC
the main bearingD
the cross-head
考题
单选题African Americans stopped using chemical straighteners or hot irons because ______.A
they reversed the attitude the white people had towards themB
they started to see beauty in their thick curly hairC
they feel good and comfortable in being differentD
they accepted the white standards of beauty
考题
单选题The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge，and in a few minutes the pressure drops sharply. This could be a result of the（）.A
booster pump coming on the line and discharging properlyB
booster pump failing to startC
booster pump being lined up in the wrong directionD
ship's pump speeding up
考题
单选题The lower end of each piston rod is reduced in diameter to fit a bore in the cross-head, this being secured to the piston rod by （）.A
a boltB
a capC
a discD
a nut
考题
单选题Worn out ring grooves should be （） to standard dimension after being welded.A
machinedB
boredC
honedD
drilled
考题
单选题The main bearing shells are made of steel with a lining of bearing metal which may be white metal, copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）A
main bearing shellsB
main bearingC
steelD
bearing metal
考题
单选题The piston ring grooves for a standard engine are （）A
chromium-plate against wearB
anti-corrosion treatedC
white metal lined against wearD
flame hardened against wear
考题
单选题Just after stopping the engine while the oil is still circulating.Check that uniform oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoes.The oil flow from （） must be compared from unit; there should be a similarity in the flow patterns.A
the piston cooling oil return pipesB
the main and crankpin bearingsC
thrust and intermediate bearingsD
stern tube and thrust bearings
考题
单选题In order to prevent stress from being set up in the metal, expansion joints are fitted which _____ the stress by allowing the pipe to expand or contract freely.A
reclaimB
reconcileC
rectifyD
relieve
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