在检查和调整主机回油阀调节式喷油泵的供油量均匀性时，对始终点

【名词&注释】

往复式(reciprocating)、增压器(turbocharger)、蒸汽动力装置(steam power plant)、喷油泵(fuel injection pump)、小汽轮机(small turbine)、蒸汽机(steam engine)、四冲程柴油机(four-stroke diesel engine)

[单选题]在检查和调整主机回油阀调节式喷油泵的供油量均匀性时，对始终点调节式喷油泵，可通过转动进回油阀阀杆下的调节螺钉改变顶杆长度，从而调节柱塞的有效行程。当进油阀的顶杆伸长时，柱塞的有效行程（），回油阀的顶杆伸长时，柱塞的有效行程（）。

A. 变大/变小
B. 变大/变大
C. 变小/变大
D. 变小/变小

查看答案&解析 查看所有试题

学习资料：

[单选题]最早用于海船上的蒸汽动力装置是（）。

A. 汽轮机
B. 往复式蒸汽机^{(steam engine)}
C. 往复式与透平联合装置
D. A+C

[单选题]四冲程柴油机^{(four-stroke diesel engine)}停增压器运转产生的主要问题是（）。

A. 无法换气
B. 排气倒流
C. 振动强烈
D. 喘振

[单选题]A lubricant often has to perform many duties in any situation, in addition to its fundamental job of （）.

A. resisting oxidization
B. reducing friction
C. promoting moving speed
D. developing inertia

[单选题]A variable pitch propeller is made （） a boss with separate blades mounted into it.

A. of
B. up of
C. from
D. out

[单选题]As for a diesel engine, lack of combustion air may be due to （）.

A. fouling turbine
B. fuel pump faults
C. lubrication failure
D. excessive cooling

[单选题]Due to （） action of pistons some relative motion between parts in contact in the coolant supply and return system must occur.

A. reciprocating
B. rotating
C. running
D. removing

[单选题]The （） or balance tank collects the re-circulated fuel oil.

A. buffer
B. sump
C. bilge
D. overflowing

[单选题]The rising of the exhaust temperature in manifold pipe may NOT result from （）.

A. too great a loading
B. fouled turbocharger
C. bad combustion
D. excessive air

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