【名词&注释】
增压器(turbocharger)、二冲程柴油机(two-stroke diesel engine)
[单选题]航行中在舵机工作正常的情况下,舵沉重的原因可能是()。
A. 舵杆变形
B. 舵承损坏
C. 舵系安装不良
D. 舵杆折断
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[单选题]增压二冲程柴油机当增压器损坏无法使用而使用辅助或应急鼓风机时,其运转功率与转速的降低程度主要应考虑的因素是()。Ⅰ.排气温度;Ⅱ.柴油机振动;Ⅲ.排气颜色;Ⅳ.柴油机运转状态
A. Ⅰ+Ⅱ+Ⅲ
B. Ⅰ+Ⅲ+Ⅳ
C. Ⅱ+Ⅲ+Ⅳ
D. Ⅰ+Ⅱ+Ⅳ
[单选题]Diesel engines are started by supplying () into the cylinders in the appropriate sequence for the required direction.
A. fuel oil
B. diesel oil
C. compressed air
D. jacket water
[单选题]Since the burning or combustion takes place within the engine itself, the engine is known as ().
A. a fire -tube boiler
B. an internal combustion engine
C. an external combustion engine
D. an internal combustion generator
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