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单选题
Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of ship or its wake，Governments of Parties to the Convention should，to the extent they are reasonably able to do so，promptly（）the facts bearing on the issue of whether there has been a violation of the provisions of this Regulation or Regulation 10 of this Annex of MARPOL 73/78.
A
observe
B
investigate
C
see
D
look
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更多 “单选题Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of ship or its wake，Governments of Parties to the Convention should，to the extent they are reasonably able to do so，promptly（）the facts bearing on the issue of whether there has been a violation of the provisions of this Regulation or Regulation 10 of this Annex of MARPOL 73/78.A observeB investigateC seeD look” 相关考题
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Oil fires are best extinguished by ______.A.cutting off the supply of oxygenB.removing the fuelC.cooling below the ignition temperatureD.spraying with water
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Excessive oil foaming in the crankcase of a refrigeration compressor is most likely to occur when the compressorA.has run continuously for a long periodB.suction pressure is below normalC.oil level is below normalD.starts after a long idle period
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The Chief and 3rd Engineers went below，changed the fuel to diesel oil and reduced the engine to slow ahead．This sentence implies all those below except that ________ ．A.the Engine was not on slow ahead before Chief and 3rd Engineers went downB.the Engine was using diesel oil before Chief and 3rd Engineers went downC.the Engine was using fuel oil before Chief and 3rd Engineers went downD.the Chief and 3rd Engineers went into the Engine Room to operate the Engine
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Which statement is TRUE of a gasoline spill ________．A.It is visible for a shorter time than a fuel oil spillB.It is not covered by the pollution lawsC.It does little harm to marine lifeD.It will sink more rapidly than crude oil
考题
A carbon dioxide fire extinguisher should be recharged ______.A.at least annuallyB.whenever it is below its required weightC.only if the extinguisher has been usedD.before every safety inspection
考题
As an extinguishing agent, foam ______.A.conducts electricityB.should be directed at the base of the fireC.is most efffective on buring gases which are flowingD.extinguishes by cooling oil fires below ignition temperature
考题
How does foam extinguish an oil fire ?______.A.By cooling the oil below the ignition temperatureB.By removing the fuel souce from the fireC.By excluding the oxygen from the fireD.By increasing the weight of the oil
考题
单选题An amplitude of the Sun in high latitudes（）.A
is most accurate before sunriseB
is most accurate after sunsetC
should only be observed when the Sun's lower limb is above the horizonD
is most accurate when the Sun's center is observed on the visible horizon
考题
单选题When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）A
plugging gooseneck tank vents to prevent accident overflowB
maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow lineC
sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fillD
maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the ship
考题
单选题The oil sump, a light welded design, is mounted on the engine block from below and sealed by （）A
O-ringB
gasketC
washerD
packing
考题
单选题In evacuation from a ship，an individual without the option of a survival craft or liferaft should enter the water on the leeward side，except when（）.A
there is burning oil on the waterB
there is a rescue craft in the areaC
water temperature is below 40°FD
a rigid survival craft is in the area
考题
单选题（）is not an advice be observed when samples are taken in tanks containing volatile petroleum products.A
Filter masks with a combination filter should be brought and used whenever necessaryB
Only explosion-proof equipment（marked EEx）should be usedC
Avoid breathing petroleum gases，especially if they come from sour crude（smell of rotten eggs）D
so far as possible，take early and substantial action to keep well clear
考题
单选题In a marine diesel engine the oil sump is （）.A
just below the crankcaseB
the oil cup for the exhaust valveC
the pan for collecting drain fuel oilD
oil circulating pump
考题
单选题If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.A
compression pressures are below normalB
lube oil is diluted with fuel oilC
cranking speed is too lowD
exhaust system is partially restricted
考题
单选题As an extinguishing agent，foam（）.A
conducts electricityB
should be directed at the base of the fireC
is most effective on burning gases which are flowingD
extinguishes by cooling oil fires below ignition temperature
考题
单选题Oil fires are best extinguished by（）.A
cutting off the supply of oxygenB
removing the fuelC
cooling below the ignition temperatureD
spraying with water
考题
单选题When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.A
air from contacting the oil vaporsB
permitting re-ignition boiling of the heated oilC
spontaneous combustion below the oil surfaceD
toxic fumes from escaping to the surface
考题
单选题Sludge formation in a diesel engine lube oil system is caused by（）A
carbonization of oils from the combustion chambersB
emulsions of lube oil and waterC
coagulation of unburned fuel below the piston ringsD
all of the above
考题
单选题When discharging bilge water, which criteria must be observed?（）A
The requirement for the oil content of bilge water discharged is 15 ppmB
No discharge in sensitive watersC
Any discharge in sensitive watersD
International, national or local requirements have to be observed
考题
单选题One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against（）A
flattening of the bowl neoprene O-ringsB
operation within the explosive rang of the fuelC
excessive purifier operating pressuresD
excessive oil viscosity
考题
单选题Which of the following adjustments is always required whenever the diesel engine governor oil has been drained and renewed?（）A
speed droopB
compensationC
idle speed settingD
load limit control
考题
单选题Which type of ships as below isn’t subject to Enhanced Survey Program (ESP)?（）A
Non-sea-going shipsB
Liquefied gas carriersC
Bulk carriers, including ore carriersD
Edible oil tankers
考题
单选题Excessive oil foaming in the crankcase of a refrigeration compressor is most likely to occur（） when the compressor.A
has continuously for a long periodB
suction pressure is below normalC
oil level is below normalD
starts after a long idle period
考题
单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）A
The diesel oil must never be allowed to mix with the heavy fuelB
The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveC
The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveD
The heating steam must be secured before the diesel oil passes through the three-way valve
考题
单选题0ne of the limitations of foam as an extinguishing agent is that foam（）.A
cannot be made with salt waterB
is heavierthan oil and sinks below its surfaceC
is corrosive and to fire fightersD
conducts electricity
考题
单选题Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.A
LoadingB
DischargingC
Crude oil washingD
Steaming tanks
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