默认题库 - 船舶电气与船舶安全

单选题

Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?（）

A. Bypass the after-cooler to operate at speed
B. Run at reduced speed until the cooler can be repaired or renewed
C. Switch to diesel fuel and run at full speed
D. Nothing need to be done due to the low heating value of heavy fuel

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单选题

A person on a fixed, or floating platform engaged in oil exploration, located 10 nautical miles from nearest land MAY discharge （）.

A. food waste
B. food, ground to less than 1"
C. paper, ground to less than 1"
D. None of the above

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单选题

When stand-by engine instructions have been received, it’s necessary to make it sure that all valves in the various systems are（）

A. operational
B. open
C. closed securely
D. at middle positio

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单选题

For vessels with （）, the meaning of the order would include the combination of pitch and revolutions as indicated in ships orders.

A. fixed pitch propellers
B. uncontrollable pitch propeller
C. constant pitch propellers
D. variable pitch propeller

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单选题

If a vessel moored at a U-Sterminal does not comply with coast guard pollution prevention regulation, it may be detained by the （）

A. Inspector general
B. Captain of the port
C. local port authority
D. state pollution board

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单选题

The（）is a series of trials done at sea to determine whether the ship has met the specifications of design, modification, or repair.

A. Sea trial
Bed-test
C. Engine performance
D. PSC inspectio

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单选题

The two-stroke cycle begins with the piston coming up from the BDC, with the scavenging ports in the sides of the cylinders being （）.

A. open
B. uncover
C. covered
D. closed

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单选题

To prevent excessive （） in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possible.

A. thermal stresses
B. bending moments
C. thermal loads
D. surface tensio

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单选题

It should be evident that the amount of fuel injected into the cylinder is dependent on the position of the helix relative to the （）.

A. inlet port
B. exhaust port
C. spill port
D. scavenge port

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单选题

Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）

A. Control the amount of lube oil burned in the combustion chamber
B. Transmit heat from the piston to the cylinder liner
C. Prevent damage to ring groove inserts by acting as a heat dam
Dissipate combustion chamber gas pressure by channeling it through the ring ga

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