大管轮轮机英语综合
50．Fix the fuel injector into______after repair.
A. the cylinder liner B. the cylinder cover C. the cylinder jacket D. the piston 51．Lower suction pressure of a pump may be caused by ______.
A. too much air in the pipe line B. closed inlet valve C. empty tank D. leaky pipe
52．Diesel engine exhaust temperatures may be used to indicate ______.
A. leaking exhaust valves B. an overloaded cylinder C. a clogged injector nozzle D. all of the above.
53．The indications of a scavenge fire are excessive black smoke, ______ and peeling from scavenge
trunking.
A. turbo-chargers surge B. spark seen from the drains C. paint blistering D. all above are right 54．It is well known that the whole power distribution of the ship s electrical services mainly depend
on the______.
A. sub-boards B. main switchboards C. emergency switchboards D. distribution boards 55．Combustion knock can occur in the cylinders of a diesel engine under any condition permitting
______.
A. a shortened ignition delay period B. a lean fuel/air mixture
C. excess fuel in the combustion chamber D. rapid vaporization of injected fuel droplets
56．Oil mist detectors are usually used on board to detect oil mist density within ______.
A. the engine crankcase B. the engine scavenge boxes C. drain tanks D. fuel tanks
57．Before doing maintenance on electrical equipment, you should ______.
A. turn off power first B. turn on power first C. with a test pen in hand D. tell C/E 58．When start a screw pump, the by pass valve should be ______.
A. closed B. opened fully C. cracked open D. partly open
59．Our company has built a new ship in Hamburg and I am going to fly there to______.
A. hand it over B. take it over C. carry it over D. carry it out 60．Routine monitoring of a diesel engine should include ______.
A. checking for leaks B. checking temperatures and pressures C. listening for abnormal noises D. all of the above.
61．Which of the precautions listed should be observed when taking on diesel fuel?
A. Secure all lighting to the main deck.
B. Provide a portable fan to blow away fumes. C. Prohibit smoking in the area.
D. Display a black triangle during daylight hours.
62．The conventions under which the port state control inspection is carried out include all the
following except______.
A. SOLAS 74 B. MARPOL 73/78 C. STCW 78/95 D. ISM Code 63．A portable foam fire extinguisher is placed in operation by ______.
A. turning it upside down B. pressing the foam lever C. squeezing the grip handle D. opening the hose valve
64．In cleaning up an oil spill, the use of chemical agents would ______.
A. absorb the oil for easy removal B. remove the oil from the water C. disperse or dissolve the oil in the water D. not affect the oil
65．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which
of the following actions should you take? A. Make an entry in the official logbook.
B. Open the master control valves on the fixed CO 2 system. C. Start the fire pump and check discharge pressure. D. Secure auxiliary condenser overboard discharge.
66．One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is
______.
A. the snow which is sometimes discharged along with the gas is toxic B. prolonged exposure to high concentrations of CO 2 gas causes suffocation C. rapid dissipation of the CO 2 vapor
D. the CO 2 gas is lighter than air and a large amount is required to extinguish a fire near the deck 67．The company should establish procedures to ensure that the ship is maintained______ the
provisions of the relevant rules and regulations.
A. out of accordance with B. in relation to C. in conformity with D. in connection with 68．The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than ______
by weight any time when being tested. But watch-keepers are not allowed to drink any alcoholic beverage ______before their watch.
A. 0.08%/ 4 hours B. 0.08%/ 2 hours C. 0.04%/ 4 hours D. 0.04%/ 2 hours
二、关联题（每组关联题题干下有4个小题，每小题4个选项） 第一组：
Because the exhaust gas driven turbo-blower cannot provide enough air at low engine speeds, the pressurized air should be cooled to increase the charge air density. As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engine. So a water separator should be mounted beneath the bottom part of the engine inlet manifold.
Lubricating oil from the compressor will pass along the air lines and deposit on them, in the event of a cylinder air starting valve leaking, hot gases would pass into the air pipes and ignite the lubricating oil. If starting air were supplied to the engine, this would further feed the fire and could lead to an explosion in the pipelines. In order to prevent such an occurrence, cylinder-starting valves should be properly maintained and the pipelines regularly drained. Also oil discharged from compressors should be kept to a minimum, by careful maintenance. 69. A water separator is used in order to ______.
A. keep the air from being carried into the engine B. keep the moisture from being condensed
C. keep the danger from being carried into the engine D. take away the condensate from the air 70. Why should we use a charge air cooler?
A. In order to increase the charge air temperature. B. In order to increase the charge air pressure.
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