Operating conditions in the crank chamber are very （） those in the cylinder.

[单选题]E．ngine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .A．an insufficient speed droop settingB．an overloaded engineC．clogged drain holes in the oil control ringsD．complete combustion

[名词解释] 运行限值和条件 operating limits and conditions

[单选题]Each crank is made up of two crank webs joined by a common（） to which the bottom endbearing is fitted.A . throwB . crankshaftC . crankpinD . crosshead

[单选题]A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.A . double-acting engineB . opposed pistons engineC . single-acting engineD . horizontal acting engine

[单选题]The crank chamber oil （）.A . can be recoveredB . is only supplied to cylindersC . only feeds the main bearingD . is a kind of detergent

[单选题]With the crank in position in the engine, some measurements can be taken by a special bridge gauge and （）.A . a micrometerB . a bowlC . a feeler gaugeD . a wrench

[单选题]They found the conditions there ________.A.much improveB.much to improveC.m

[单选题]Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.A . internal crankshaft passagesB . immersion in oilC . splash lubricationD . injection lubricatio

[单选题]（） neutralizes the acid conditions and（） cleanses the rings and grooves.A . The detergency；the alkalinityB . The alkalinity；the detergencyC . The inhabitant；the waterD . The additives；the distilled water

[单选题]An operating system is ( ).A.the highest layer of softwareB.the lowest laye