During the deck repair, ____ sho

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During the deck repair, ____ should be measured firstly before tail shaft is drawn out.
- A.the sinking of tail shaft
- B.the clearance of stern bearing
- C.the total flexure of both end bearing
- D.main engine crankshaft deflection
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Since heat will not flow freely from a body at a _____ temperature to another at a _____ temperature, it is necessary to expend mechanical work, heat, or electrical energy from an external source to achieve refrigeration.
- A.lower/higher
- B.shallower/deeper
- C.larger/smaller
- D.higher/lower
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The crankshafts on the large modern 2-stroke crosshead engines are ______ big ______ makes as a single unit and so are constructed by joining together individual forgings.
- A.enough/to
- B.too/to
- C.such/so
- D.so/that
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The time of discharging oil is short, but oily water separator discharges oil frequentlyThe possible reason is ____.
- A.the sensor of low oil level is fully covered by sludge
- B.the coarse strainer before the pump in suction system is clogged
- C.the screw pump is worn seriously and volumetric efficiency is decreased
- D.bilge suction value is clogged
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To prevent the build up of high stresses engine must not be run continuously _____.
- A.faster than dead slow speed
- B.slower than dead slow speed
- C.with the output of MCR
- D.at critical speeds
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Dirty oil must be _____ before being used again.
- A.mixed with clean oil
- B.purified
- C.heated
- D.strained
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Which of the following statements is true concerning the overall efficiency of air compressors?
- A.High pressure compressors are more efficient than low pressure compressors
- B.Mechanical efficiency divided by compressor efficiency will equal the overall efficiency of the compressor unit
- C.Two stage compressors are generally more efficient than single stage compressors
- D.The volumetric efficiency is decreased in multistage compressors
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Which of the following items don’t belong to dock repair works?
- A.making the repair list, booking spare parts and special tools for the dock repair
- B.shutting off all of the S.W valves to outboard
- C.the sketches or diagrams used for the dock repair
- D.cleaning up the oil tank and boiler before enter the dock
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The lubrication to the cylinders affected by the fire must be ______ to prevent seizure and all scavenge drains must be ______ to prevent the discharge of sparks and burning oil from the drains into the engine room.
- A.decreased / opened
- B.decreased / shut
- C.increased / opened
- D.increased / shut
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Before the oily water is installed on board ships, it must have ____.
- A.IOPP
- B.type approval certificate
- C.cargo ship safety equipment certificate
- D.cargo ship safety certificate
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During the deck repair, ____ should be measured firstly before tail shaft is drawn out.

During the deck repair, ____ should be measured firstly before tail shaft is drawn out.

Since heat will not flow freely from a body at a _ temperature to another at a _ temperature, it is necessary to expend mechanical work, heat, or electrical energy from an external source to achieve refrigeration.

The crankshafts on the large modern 2-stroke crosshead engines are big makes as a single unit and so are constructed by joining together individual forgings.

The time of discharging oil is short, but oily water separator discharges oil frequentlyThe possible reason is ____.

To prevent the build up of high stresses engine must not be run continuously _____.

Dirty oil must be _____ before being used again.

Which of the following statements is true concerning the overall efficiency of air compressors?

Which of the following items don’t belong to dock repair works?

The lubrication to the cylinders affected by the fire must be to prevent seizure and all scavenge drains must be to prevent the discharge of sparks and burning oil from the drains into the engine room.

Before the oily water is installed on board ships, it must have ____.