关于可靠性的规定（）。Ⅰ.“完成规定功能”；Ⅱ.“不发生故障”；Ⅲ.“

【名词&注释】

可靠性(reliability)

[单选题]关于可靠性的规定（）。Ⅰ.“完成规定功能”；Ⅱ.“不发生故障”；Ⅲ.“发生故障”

A. Ⅰ=Ⅱ
B. Ⅰ=Ⅲ
C. Ⅰ≠Ⅱ
D. Ⅰ，Ⅱ，Ⅲ无关系

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学习资料：

[单选题]曲轴轴颈表面的腐蚀凹坑、锈斑，主要是滑油中含有（）。

A. 水分
B. 酸
C. 碱
D. 水分和酸

[单选题]轴系两端轴的同轴度是通过测量轴系两端轴法兰上的（）来衡量。

A. 偏移值
B. 总偏中值
C. 偏中值
D. 总偏移值

[单选题]（） the supercharge pressure is, （） power an engine develops.

A. The higher；the more
B. Higher；more
C. Higher；little
D. The higher；the le

[单选题]Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.

A. timing
B. power
C. firing order
D. dead center

[单选题]The position of the piston parts in relation to each other is secured by means of （） and a dowel pin in the crown.

A. bosses
B. through bolts
C. machine-turned recesses
D. long stud

[单选题]The viscosity regulator controls （） in order to provide oil at the correct viscosity for combustion.

A. the engines speed
B. the engines load
C. the fuel oil temperature
D. the fuel oil flow

[单选题]Fusible plugs are installed in fire-tube boilers to （）.

A. provide a means of draining the boiler
B. warn the engineer of low water level
C. cool the crown sheet at high firing rates
D. open the burners electrical firing circuit

[单选题]High diesel engine cooling water temperatures can be caused by （）.

A. air in the cooling system
B. an overhauled water pump
C. correct amount of coolant
D. no air in the cooling system

[单选题]Sudden unloading of a diesel engine can cause（）.

A. decreased fuel efficiency
B. increased exhaust temperature
C. black smoke
D. overspeed tri

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