輪機英語船舶電氣與船舶安全單項選擇題每日一練(2019.01.07)

單項選擇題
The term diesel engine scavenging means（）
A.delivering more air into the cylinder than it would normally receive during an ordinary charging process
B.forcing the products of combustion out of the cylinder with the fresh air charge
C.collecting the air charge at the cleaner
D.combustion and expansion of hot gas
單項選擇題
Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A.chromium plating piston rings
B.knurling the piston skirt
C.extended maximum power operation
D.applying load to a cold diesel engine
單項選擇題
If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should （）.
A.close the static leg filling valve
B.close the overflow tank falling valve
C.reduce the fuel oil pumping rate
D.stop the fuel oil pumping operation
單項選擇題
A(n)（） is the documentary attestation for the delivery of stores and spare parts.
A.informative note
B.invoice
C.store booklet
D.maintenance book
單項選擇題
The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
A.water supply
B.fuel oil supply
C.lube oil supply
D.exhaust damper

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