單項(xiàng)選擇題The diesel engine is a type of （）.
A.turbine engine
B.gas turbine
C.steam engine
D.internal combustion engine
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1.單項(xiàng)選擇題The diameters of the crankpins should be measured using （）.
A.a micrometer
B.a bridge gauge
C.a spanner
D.a wrench
2.單項(xiàng)選擇題The diameter of the gravity disc is too big It causes oil to flow through the water outlet We changed the disc and no （） is found in the water outlet.
A.water
B.oil
C.scale
D.ridge
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Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
題型：單項(xiàng)選擇題
The main purpose of the piston oil scraper rings is to （）.
題型：單項(xiàng)選擇題
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
題型：單項(xiàng)選擇題
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
題型：單項(xiàng)選擇題
The minimum speed an engine must attain before ignition can occur depends upon （）.
題型：單項(xiàng)選擇題