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单选题 Medium speed engines have a _______ power to weight ratio than the slow speed two strokes, but due to the higher speeds tend to have _______ maintenance intervals
学科：轮机英语
时间：2024-01-08 09:30:40
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题目1单选题
The main factor determining the output of each cylinder is the cylinder __________A. lengthB. boreC. weightD. material
题目2单选题
Medium speed engines have a _______ power to weight ratio than the slow speed two strokes, but due to the higher speeds tend to have _______ maintenance intervalsA. higher/reducedB. higher/increasedC. lower/reducedD. lower/increased
题目3单选题
The abbreviation "M/E" is used to represent the _________A. measure equipmentB. main electricalC. my engineD. main engine
题目4单选题
The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of ________ rpmA. below 300B. above 1,200C. between 300 to 1,200D. below 1,200
题目5单选题
The slow speed main propulsion diesel usually operates on ___________A. the four stroke cycleB. the four-stroke cycleC. the two stroke cycleD. the two-stroke cycle
题目6单选题
A low speed engine requires ________ reduction gearbox ________ it and propellerA. none/bothB. no/bothC. none/betweenD. no/between
题目7单选题
The rotating range of the low speed diesel engine is usually lower than __________A. 100rpmB. 200rpmC. 300rpmD. 500rpm
题目8单选题
Porpulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes ___________ as prime moverA. gas turbineB. diesel engineC. steam engineD. gasoline engine
题目9单选题
We call a ship equipped with a diesel engine as main engine _______A. a tug boatB. a salvage shipC. an oil tankerD. a motor vessel
题目10单选题
A diesel engine is similar to a gasoline engine except that the former has no _________A. cross-headB. cylinderC. connecting rodD. spark plug
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