單項(xiàng)選擇題

What is the holding power ratio of an anchor? （）

A.Maximum mooring line tension divided by the anchor's weight in air
B.Anchor's weight in air divided by the maximum mooring line tension
C.Preloading tension divided by the anchor's weight in air
D.Operating tension divided by the anchor's weight in air

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單項(xiàng)選擇題

What is the function of wearing rings found on some centrifugal pumps? （）

A.Absorb erosion of high velocity discharge stream
B.Seal pump shaft against entry of air
C.Isolate the outlet side from the inlet side
D.Dampen the turbulent discharge flow

單項(xiàng)選擇題

What is the best indication of the loading of a diesel engine?（）

A.Oil temperature
B.Manifold pressure
C.Exhaust gas temperature
D.Fuel consumption

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What is the holding power ratio of an anchor? （）

你可能感興趣的試題

What is the function of wearing rings found on some centrifugal pumps? （）

What is the best indication of the loading of a diesel engine?（）