更多"Around the combustion chamber, all "的相关试题:
[单项选择]Around the combustion chamber, all the main components are bore cooled to give low strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner（）
A. thermal
B. mechanical
C. plastic
D. elastic
[单项选择]A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.
A. double-acting engine
B. opposed pistons engine
C. single-acting engine
D. horizontal acting engine
[单项选择]In the combustion chamber, the part whose surface is exposed to the highest temperature is the （）.
A. cylinder liner
B. cylinder cover
C. piston
D. exhaust valve
[单项选择]In which of the listed refrigeration system components does superheating of the refrigerant take place?（）
A. Expansion valve
B. Evaporator
C. Drier
D. Receiver
[单项选择]（）is main emergency fire system in all merchant ships.
A. CO2 system
B. Foam system
C. Dry power system
D. Water supply system
[单项选择]I think all these are main points（）much attention.
A. being worthy of
B. worthy of
C. which worth
D. which worthy of
[单项选择]UML通过图形化的表示机制从多个侧面对系统的分析和设计模型进行刻画。其中（）包括构件图（component diagram），它描述软件系统中各组成构件、构件的内部结构以及构件之间的依赖关系。
A. 用例视图
B. 结构视图
C. 行为视图
D. 构件视图
[单项选择]The main purpose of warming the parts of the main engine is （）
A. to reduce heat stress
B. to reduce low temperature corrosion
C. to improve firing and starting performance
D. fuel saving
[单项选择]The main purpose of changing main engine to electronic controlled is not to（）
A. control fuel injection time more precisely
B. control fuel injection rate more precisely
C. meet the environmental requirements
D. meet high engine speed requirements
[单项选择]The circular steel structure installed around the propeller of a towboat is the（）.
A. nozzle
B. shroud
C. strut
D. hood
[单项选择]Preliminary estimation puts the figure at around $110 billion,（）the $160 billion the President is struggling to get through the Congress.
A. in proportion to
B. in reply to
C. in relation to
D. in contrast to
[单项选择]Kort nozzles are installed around the propellers of some vessels to（）.
A. Increase the thrust of the propeller
B. Protect the propeller from striking sawyers
C. Prevent the propeller from striking barges towed on the ship
D. Prevent the propeller from touching bottom in low water
[单项选择]The circulation around a low pressure center in the Northern Hemisphere is（）.
A. counterclockwise
B. variable
C. clockwise
D. anticyclonic
[单项选择]The area around Cape Charles is（）.
A. low and bare，but the land back of it is high and wooded
B. composed of low to medium rolling hills
C. well defined with rocky outcroppings
D. marked by high，barren hills
[单项选择]Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）
A. permanent loss of pump suction
B. worn shaft seals
C. high level in the oil sump
D. low motor RPM
[单项选择]That center around which a vessel trims is called the（）.
A. tipping center
B. center of buoyancy
C. center of gravity
D. turning center
[单项选择]The exhaust ports are located around the lower part of the cylinder liner, （）the products of combustion are driven by scavenging air.
A. in which
B. by which
C. through which
D. from which
[单项选择]The irregular black line around a charted light such as Race Rock Light indicates that it is （）.
A. unwatched
B. surrounded by riprap
C. a minor light
D. constructed on an artificial island
[单项选择]When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.
A. eddies under the bar
B. swift current under the bar causing loss of control
C. cross-currents pushing the tow away from the bar
D. cross-currents pushing the tow into the bar
