柱塞偶件配合面磨损后会导致（）。Ⅰ.喷油压力下降；Ⅱ.喷油定时延

【名词&注释】

增压器(turbocharger)、平均值(average)、静平衡试验(static balance test)、喷油量(injection quantity)、动平衡试验(dynamic balance test)

[单选题]柱塞偶件配合面磨损后会导致（）。Ⅰ.喷油压力下降；Ⅱ.喷油定时延后；Ⅲ.喷油量减少；Ⅳ.喷油时间延长。

A. A．Ⅰ＋Ⅲ＋Ⅳ
B. B．Ⅰ＋Ⅱ
C. C．Ⅱ＋Ⅲ＋Ⅳ
D. D．I＋Ⅲ

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学习资料：

[单选题]消除增压器振动的方法可采用（）。Ⅰ.换新转子；Ⅱ.换新轴承；Ⅲ.动平衡试验^{(dynamic balance test)}；Ⅳ.静平衡试验；Ⅴ.校中测量。

A. A．Ⅰ＋Ⅱ＋Ⅲ＋Ⅴ
B. B．Ⅱ＋Ⅲ
C. C．Ⅰ＋Ⅲ＋Ⅴ
D. D．Ⅱ＋Ⅱ＋Ⅳ

[单选题]桨叶上同一半径截面上的局部螺距的算术平均值称为该截面的（）螺距。

A. 总
B. 截面
C. 平均
D. 桨叶

[单选题]A governor automatically controls engine speed by regulating （）.

A. fuel supply
B. firing order
C. engine load
D. oil level

[单选题]After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.

A. steering
B. timing
C. turning
D. running

[单选题]The minimum speed an engine must attain before ignition can occur depends upon （）.

A. the type and size of the engine
B. the condition of the engine
C. ambient temperature
D. all of the above

[单选题]The part of a windlass which physically engages the chain during hauling or paying out is the（）.

A. devil's claw
B. bull gear
C. wildcat
D. cat head

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