航海英语(甲类船长)船舶结构与设备单选题练习2

Which statement about tunnel bow thrusters fitted to large vessels is TRUE ________．

Which type of davit is not considered to be a mechanical davit ________．

Which davit type may be operated by one man ________．

Which pump must always be primed ________．

When the helm is turned on the navigation bridge，which of the listed actions will be the FIRST response in the steering room on a ship equipped with an electro-hydraulic steering gear ________．

When stowed on steel decks，the strongbacks and pontoons shall be secured with ______．

What would white exhaust smoke from a diesel engine probably mean ________．

What prevents water running along the shaft of a leaking centrifugal pump from entering the shaft bearing ________．

What quality of a diesel fuel is most significant for efficient combustion ________．

What power source actuates a solenoid valve ________．

What is the purpose of limber holes ________．

What is the purpose of the intake/exhaust valves in a diesel engine ________．

What is an advantage of a gate valve over a butterfly valve ________．

What is an advantage of diesel over steam turbine propulsion ________．

What is the most probable cause of reduced capacity in a reciprocating air compressor ________．

What causes cavitation in a centrifugal pump ________．

Vessels required to be equipped with an approved backfire flame arrester are ______．

Ultrasonic testing is used to determine the thickness of a vessel's shell plating and to ______．

Under normal operating conditions，the rudder is hydraulically locked unless ______．

The Vessel not to be ______ to force ice，but to follow ice-breaker if required．

The Vessel is fully fitted with cargo ______．

The venting system shall be provided with devices to prevent the passage of ______ into the cargo tanks．

The roller hatch beam at the edge of the open section of the hatch shall be ______ so that it cannot be moved toward the open section．

The rudders are amidships and both screws are going ahead．What will happen if the starboard screw is stopped ________．

The use of an anchor to assist in turning in restricted waters is ______．

The portable radio apparatus means ______．

The purpose of a bilge well is to ______．

The part of a windlass which physically engages the chain during hauling or paying out is the ______．

The most serious effect of air trapped in a diesel engine jacket water cooling system is that it ______．

The permanent dunnage attached to the frames of the ship that aids in ventilation is（are）the ______．

The holding capability of an anchor is primarily determined by the ______．

The most common type of davit found on merchant vessels today is the ______．

The function of the bypass valve on the self-contained breathing apparatus is to ______．

The follow-up gear on an electro-hydraulic steering gear ______．

The connected joints of pipe，usually made of three joints of pipe approximately 90 feet long，racked in the derrick when making a trip are called a ______．

The exhaust pipe must be gas tight throughout its entire length otherwise ______．

The engine in a covered lifeboat is fueled with ______．

The bypass valve on a self-contained breathing device should be opened if ______．

The boom stops are installed on an offshore crane to ______．

The anchors on the bow are known as ______．

The “Port-Off-Stbd” selector switch on an autopilot steering stand is used to ______．

The BEST holding ground for conventional anchors is ______．

The “iron mike” s a（n）______．

Sudden unloading of a diesel engine can cause ______．

Strongbacks unshipped in an intermediate deck shall not be placed closer than 15.24 cm from ______．

Strongbacks unshipped in an intermediate deck shall be secured so that they cannot be ______ into a lower compartment．

Your vessel has a gasoline engine and a mechanical exhaust ventilation system．BEFORE starting the engine，the exhaust blower should be run long enough to ______．

Static electricity may be built up by the ______．

On a vessel with a single propeller，transverse force has the most effect on the vessel when the engine is put ______．

Lubricating oil should be changed on a heavy duty diesel engine when ______．

Increasing the area of the anchor flukes will ______．

On a ship，a door that is required to be marked KEEP CLOSED is designed to ______．

In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open ________．

In the navigational triangle，the angle at the elevated pole is the ______．

In nautical terminology a dog is a ______．

If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur ________．

If you are unable to stop a diesel engine by any other means，you should ______．

If a gasoline engine turns over freely but will not start，the cause is generally ______．

How would the exhaust of a properly operating diesel engine appear ________．

How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．

Every vent system outlet to atmosphere from a valve shall be located as high and at the furthest distance from a source of ignition as is practicable ______．

Dual electro-hydraulic steering units usually operate ______．

Diesel engines are considered safer than gasoline engines because ______．

Diesel engines obtain combustion air through turbo chargers，blowers，or ______．

Centrifugal pumps have what advantage（s）over reciprocating pumps ________．

Because of ______，air ducts used aboard ships are often very small and have sharp curves and bends．

Any hatch beam or pontoon left in place next to an open hatch section being worked shall be ______ or otherwise secured，so that it cannot be accidentally displaced．

Anchor shackles should have a breaking strength that is ______．

Anchors are prevented from running out when secured by the ______．

An example of a modern anchor which has a stock is a（n）______．

An LWT anchor often has difficulty tripping in ______．

An anchor winch should be equipped with mechanical brakes capable of holding ______．

All of the following steps are taken in starting a centrifugal pump，EXCEPT to ______．

An example of a messenger is a ______．

All marine low-speed diesels are of what design ________．

All echo-sounders can measure the ______．

All diesel engines are classified as ______．

A whipping is ______．

A whipping on a fiber line ______．

A VLCC（100，000 DWT+）with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a ______．

A towing vessel's capability is BEST measured by horsepower，bollard pull，maneuverability and ______．

A safe fuel system must ______．

A person may operate an air compressor in which of the following areas on board a tank barge ________．

______ is not a proper instruction for laying hatch beams．

A fuel-air mixture below the lower explosive limit is too ______．

A deck beam does NOT ______．

______ is not a proper instruction for handling hatch covers．