【名词&注释】
柴油机(diesel engine)、机动性(mobility)、生命力强
[单选题]相邻轴轴心线相交,但相邻轴两法兰中心未对准,其连接法兰处偏中值为()。
A. δ=0、φ=0
B. δ=0、φ≠0
C. δ≠0、φ=0
D. δ≠0、φ≠0
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学习资料:
[单选题]为了实现柴油机的设计性能和可靠运转,必须保证()。
A. A.固定件的相对位置的精度
B. B.活塞运动部件的相对位置精度
C. C.固定件的相对位置的精度和活塞运动部件的相对位置精度
D. D.活塞运动部件的对中性
[单选题]双轴系具有()的特点。Ⅰ.高速;Ⅱ.便于操纵;Ⅲ.机动性好;Ⅳ.传动损失小;Ⅴ.生命力强。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅲ
C. Ⅰ+Ⅲ+Ⅴ
D. Ⅰ+Ⅲ+Ⅳ
[单选题]A gudgeon pin in a trunk piston may be free to float and rotate, with () to limit axial movement.
A. split pins
B. crankpins
C. dipsticks
D. circli
[单选题]The pistons are cooled by oil supplied from the forced () system.
A. fresh water
B. sea water
C. lubrication
D. fuel oil
[单选题]A thrust block is designed to().
A. absorb the shock of wave pressure at the bow
B. be placed between the engines and the foundation to absorb the vibration
C. transmit the thrust of the engine to the propeller
D. transmit the thrust of the propeller to the vessel
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