輪機英語章節(jié)練習(xí)(2020.02.17)

單項選擇題
Which of the listed types of files is the best for producing a fine finish on metal?（）
A.Mill
B.Float
C.Warding
D.Second cut
單項選擇題
Administrations should bear in mind the significance of （） in maintaining safety of life and property at sea and in preventing marine pollution.
A.advanced nautical equipment
B.advanced performance main engines
C.emergency equipment
D.communication and language skills
單項選擇題
What type of rotor is used in split-phase motors?（）
A.Dram
B.Salient pole
C.Squirrel-cage
D.Wound-rotor
單項選擇題
Proper operation of the main engine reduction gear set requires the operation to monitor （）
A.the sump oil level
B.oil flow sight glasses
C.bearing temperatures
D.all of the above
單項選擇題
A firebox explosion in an automatically fired auxiliary boiler may be the result of （）
A.excessive purging before lighting off
B.insufficient trail for ignition period
C.a faulty transformer in the ignition circuit
D.insufficient purging before lighting off
單項選擇題
The scavenge air receiver is of a simplified and modular design with integral non-return flaps, hanging cooler and two auxiliary air blowers（）
A.dozens
B.parcels
C.bundles
D.gallons
單項選擇題
In modern installations, the main engine and the standby auxiliary engines（）
A.can be started at low temperature and are free from preheating
B.usually are preheated by steam before being started
C.are kept at a constant temperature and free from preheating
D.are kept at a low temperature to save energy
單項選擇題
Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion?（）
A.Hydraulic pumps
B.Valves
C.Hydraulic cylinders
D.Hydraulic motors
單項選擇題
A sudden drop in diesel engine cylinder compression pressure can be caused by（）
A.a leaking fuel injector nozzle
B.a clogged air filter
C.excessively early fuel injection
D.malfunctioning valves
單項選擇題
One of the major features of the STCW95 is the adoption of a new STCW Code, to which many have been transferred（）
A.safety regulations
B.technical regulations
C.minimum requirements
D.standard requirements

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