When stand－by before sailing, the duty engineer and officer should check clock, engine telegraph and rudder, and then write it in the0

A.high fuel oil viscosity

B.low fuel oil temperature

C.high lube oil viscosity

D.energized alow plugs

200 Start the turning gear， and with some one hand-operating the cylinder lubricators at regular intervals, and with the indicator cocks@,

and with the control gear in theoposition, give the engine at least one complete turn

A.open; stop

B.closed, stop

C.open; start

D.closed: start

A.It can be applied to separate two liquids

B.It cannot separate solids which contaminated in the oil.

C.It consists of purifier and clarifier

D.The centrifuge arranged to separate two liquids is known as purifier

A.viscosity a heated to reduce its

B.cooled to reduce its temperature

C.heated to reduce its density

D.heated to reduce its gravity

A.Close the inlet and outletvalves for diesel oil

B.Open the air nozzles in the secondary combustion chamber until it stops

C.Open the air nozzles in the primary combustion chamber until it stops

D.Close inlet valve for pressurized air

A.chocolate

B.yellow

C.blackish

D.ivory-white

A.The location of the interface can be changed by exchanging the diameter of the gravity disc

B.A.larger diameter of gravity disc can cause the interface is far away from bow center

C.disc should not break the The diameter of gravity water seal

D.In practice, the use of nomogram is the best oA530 operation

A、整流器供直流电

B、点火变压器供高压交流电

C、常压交流电

D、蓄电池供直流电

A、高负荷

B、低负荷

C、全部负荷

D、中等负荷

A、定差减压阀

B、节流阀

C、定值溢流阀

D、定差溢流阀