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When the starting air valve closes on one cylinder, another starting air valve has （） opened on another cylinder whose piston has just commenced its downward stroke.
A . just
B . nearly
C . merely
D . already
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Open the （）before starting an air compressor.
A . unload valve
B . cooling water
C . oil cup
D . sum
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In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）
A . noise coming from that air starting valve
B . continuous operation of the starting air compressor
C . zero air pressure in the air starting system
D . overheated starting air pipe to the cylinder head
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What needs to be done before you can start the upgrade?（）https://assets.asklib.com/images/image2/2018073017485275935.jpg
A . On the Windows 95 computer， replace the CPU with a faster model.
B . On the Windows 95 computer， reformat the disk with FAT32.
C . On the Windows 98 computer， reformat the disk with FAT32.
D . On the Windows 98 computer， increase the amount of free disk space on the hard disk.
E . On the Windows NT Workstation 4.0 computer， replace the CPU with a faster model.
F . On the Windows NT Workstation 4.0 computer， increase the amount of free disk space on the hard disk.
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If the electric motor driving an air compressor fails to start, the cause may be a （）.
A . leaking unloader
B . tripped circuit breaker
C . control line leak
D . defective pop valve
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If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be（）
A . on the power stroke
B . on the exhaust stroke
C . at the end of the power stroke
D . at the start of the intake stroke
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Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A . open the bypass line
B . cut in the lube oil cooler
C . pressurize the lube oil system
D . top off the expansion tank
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When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its（）
A . suction stroke
B . compression stroke
C . power stroke
D . exhaust stroke
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Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
A . Electric power and starting air
B . Lube oil standby pump and control air
C . Hydraulic switch and engage jacking gear
D . Motor drain and pneumatic control system power
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You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）
A . guarantee undo retention
B . add one more redo log group
C . size the redo log files appropriately
D . size the UNDO tablespace appropriately
E . size the SYSTEM tablespace appropriately
F . configure an appropriate undo retention interval
G . change automatic undo management to manual
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When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）
A . intake stroke
B . compression stroke
C . power stroke
D . exhaust stroke
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The pressure of pilot air is usually （） than that of starting air.
A . higher
B . lower
C . low
D . high
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You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）
A . guarantee undo retention
B . add one more redo log group
C . size the redo log files appropriately
D . size the UNDO tablespace appropriately
E . size the SYSTEM tablespace appropriately
F . configure an appropriate undo retention interval
G . change automatic undo management to manual
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Before starting an engine by air, the engine must（）
A . be turned by a turning gear for at least one minute
B . be turned by a turning gear for at least two minutes
C . be turned at least one complete turn
D . be turned at least two complete tur
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（） supplies pilot air to control the cylinder air start valves.
A . An air compressor
B . An indicator cock
C . An air distributor
D . A safety valve
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The starting air system usually has （） to prevent starting if anything is not in order.
A . stop valves
B . interlocks
C . non-return valves
D . air vent
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Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）
A . increase in starting air pressure
B . increase in lube oil viscosity
C . compression expansion device
D . jacket water heater
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Which of the following may cause that an engine doesnt run on starting air?（）
A . too low starting air pressure
B . main start valve closed
C . neither A nor B
D . A and B
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Before starting the engine the air bottle should be （）.
A . pumped up
B . loaded
C . discharged
D . opened
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Air receivers installed in starting air systems are to be （）.
A . cylindrical in shape with service connections located at the top and bottom
B . opened and made available for inspection during biannual inspections provided
C . with automatic drain traps for the removal of moisture
D . so installed as to make the drain connections effective under extreme conditions of trim
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Before you start an engine in a compartment，it’s MOST important to（）.
A . check the flame arrester
B . check the fuel tank
C . check the battery
D . ventilate the bilge
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Which of the following may cause that an engine doesnt turn on starting air?（）
A . too low starting air pressure
B . main starting valve closed
C . neither A nor B
D . A and B
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Before he started work, I asked the builder to give me an ________ of the cost of repairing the roof.
A) assessment
B) estimate
C) announcement
D) evaluation
