In an engine with air inlet valve and exhaust valve on its c

【名词&注释】

可靠性(reliability)、业务水平(professional level)、重要意义(significance)、动力装置(power plant)、管理人员

[单选题]In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）, there being an adequate overlap between the inlet opening and the exhaust closing.

A. downwards；upwards
B. upwards；downwards
C. downwards；downwards
D. upwards；upward

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学习资料：

[单选题]船舶营运期间，（）对保证动力装置的可靠性有重要意义。人为故障比例增加就是证明。

A. 管理人员业务水平
B. 管理人员思想水平
C. 维修性检查
D. A+B

[单选题]In the suction stroke air is induced into the cylinder （）In the compression stroke the air is compressed.

A. by an fuel valve
B. through an inlet valve
C. with an exhaust valve
D. from an outlet valve

[单选题]The crank chamber oil （）.

A. can be recovered
B. is only supplied to cylinders
C. only feeds the main bearing
D. is a kind of detergent

[单选题]The engine has one or two group of fuel pumps, depending upon （）.

A. the number of fuel valves
B. the number of cylinders
C. the speed of engine
D. the power of engine

[单选题]The main moving parts of a diesel engine consist of the （） and the pistons.

A. bedplate, connecting rods
B. crankshaft, the connecting rods
C. frames, crossheads
D. crankshaft, the cylinder

[单选题]The process to remove exhaust gases by blowing in fresh air is called （）.

A. charging
B. supercharging
C. starting
D. scavenging

[单选题]Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）

A. closing later
B. opening sooner
C. staying open for a shorter period of time
D. staying open for a longer period of time

[单选题]A dirty diesel engine oil filter element can best be detected by （）.

A. visual inspection of the elements
B. the pressure drop across the filter
C. high lube oil sump temperature
D. decrease in oil viscosity from the filter

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