轮机英语试题练习(1)

At the middle pressure and large air quantity,_________ is more suitable.

According to this passage, which of the following statements is true?

In a motor vessel, the air quantity which the engine room need is_______ of the requirements of the engines.

Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be impracticable to maintain ambient conditions within the comfort zone by air conditioning or any other means. The normal practice is to provide copious mechanical ventilation; in boiler rooms, the quantity is equated to the combustion requirements, while in a motor ship engine room the supply may be 25-50% in excess of the requirements of the engines.

The axial flow fan is particularly suited to handle these large air volumes at the moderate pressures required, while of course the “straight-through” flow feature places it at an advantage over the centrifugal fan.

The increasing adoption of automation, with the provision of a separate control room makes less significant the fact that comfort conditions cannot be maintained in the engine room all the time. Which of the following devices should be taken to maintain ambient conditions of the boiler and machinery space?

The ship security officer shall have knowledge and have received training, taking into account the guidance given in Part B of______.

The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the ______of merchant ships.

______ means the Government of the State whose flag the ship is entitled to fly.

One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.

In cleaning up an oil spill, the use of chemical agents would ______.

The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in ______of operation are immediately implemented(执行).

_____ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.

When deciding the composition of the engineering watch, which may include _____appropriately, many factors shall be taken into account.

Oil Record Book Part I shall be provided to every oil tanker of 150 tons gross tonnage and above and every ship of 400 tons gross tonnage and above, ______oil tankers, to record relevant machinery space operations.

The Port Authorities, in accordance with the IMO resolutions have been carrying out _____ to enhance safety of ships.

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the ______.

The additional mark ______in the Classification Certificate for Machinery represents the propulsion apparatus is remotely controlled on the navigating bridge control station, and engine room is watched by duty personnel.

When a vessel is in dry-dock, the vessel's engineers should ______.

Obviously, for a given fuel oil, its pour point is ______its cloud point.

Using a file without a handle may result in ______.

CO2 extinguishes a fire by __________.

Which of the following is least likely to cause the ignition of fuel vapors?

Which of the following components provides a direct source of seawater for the fire main system?

After the order '______' is given, the air system is shut down, the turning gear put in.

Keep compartment ______ as the gas given off can be dangerous.

A fire involving trash and paper waste would be classified as a ______.

______is a precaution which contributes to avoiding trouble under normal operating conditions.

The order“______” means “Maximum maneuvering engine revolution for ahead propulsion.”

Prior to any overhaul work on electric equipment, it is important to ensure the circuits are ___ .

Current measuring instruments must always be connected in ______.

Electrical circuits are protected against overheating by means of a/an _______.

A circuit breaker and a fuse have a basic similarity(类似) in that they both ______.

The primary function of an electric motor is to ______.

The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the ______.

The main generators are connected to ______.

Electric insulation is made of organic substances and so gradually ______with age.

It ______ for an emergency generator to require paralleling.

Equal power factors on paralleled AC generators are maintained by an automatic ________.

The number of cycles per second occurring in AC voltage is known as the ______.

What will be the phase angle relationship of a six-pole, three-phase, rotating field generator?

The pour point of lubricating oils is affected the most by which of the following?

If an anchor windlass has been idle for some time, you should ______.

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

In a ordinary cargo crane, ______is fitted to rotate the crane.

Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion?

When a vacuum boiling evaporator works, the hot jacket water will pass over the tube stack and ___ the sea water passing through the tubes.

What type of valve is used to direct the flow of hydraulic fluid?

Cylinders of marine diesel engines are normally cooled by ___ .

Dirty oil must be ______before being used again .

In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.

Most marine biological sewage treatment plants consist of all the following statements except ______.

The oil sludge is burnt in the ______onboar

When started, a complete oily water separating unit is first filled ______. The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.

Which is the pollution prevention equipment?

A high rate of separation between oil and water is favored by ______.

In a chilled(冷的) water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ______.

Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of ______.

The effective temperature of air is dependent upon ______. I. relative humidity II. air velocity

The heat identified by only a change in temperature is known as ______.

If a centrifugal pump is driven by a constant speed electric motor and produces a discharge pressure less than designed, the cause is probably ______.

An increase in rotor clearances in a rotary pump will ______.

The pressure of a liquid leaving the pump can be referred to as the ______.

The discharge flow of a reciprocating pump is ______.

A spur gear pump should be operated with the discharge valves ______.

If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause may be ______.

The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust ______.

______continuously extract the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity(不透明性) measuring track.

A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.

The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ______.

In a ______boiler the hot gases from the furnace pass through the tubes while the water is on the outside.

A dirty diesel engine oil filter element can best be detected by ______.

Immediately after any diesel engine is started, the engineer should check the ______.

A governor automatically controls engine speed by regulating ___ .

Constant cooling the various components of diesel engine has a number of functions except for ______.

The cetane number of a diesel fuel oil indicates its ______.

The lower section of a piston is called the ______.

The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices, during ______.

Always ensure that the turning gear is______, even at the quay, the wave from other ships may turn the propeller and thus the engine.

The main factor which determines the output of each cylinder is _____.