A.arranged as close to each other as possible to save space
B.arranged far away from each other for convenient operation
C.be fixed or clamped to avoid vibration
D.kept easy removable as to convenient repairing work
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A.stays at rest
B.is working stably
C.is worn out
D.is in good operation
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 turns
A.the lubricating pumps are stopped and the access doors are opened
B.the lubricating pumps are running and the access doors are opened
C.the engine is running and the access doors are closed
D.the engine is stopped and the access doors are closed
A.should be kept at a proper level by a cooler
B.should be raised to about 80℃ by a heater
C.should be raised gradually
D.should be lowered to about 60℃
A.operational
B.open
C.closed securely
D.at middle position
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