题目内容

Which of the following devices is a common basic element with nearly all mechanical governors？

A. Power piston
B. Control rack
C. Weights acted on by centrifugal force
D. Isochronous（同步的）droop spring

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Electrical supply is always needed even if only for lighting so after a ship goes into service it is extremely rare for the main bus-bars to be dead, it therefore follows that the bus-bars are continuously alive the life of the ship.

A. along
B. with
C. throughout
D. for

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At least ___ cylinders in four--stroke engine will be configured to ensure that the engine

A. 6
B. 2
C. 12
D. 8

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Before performing any maintenance on a hydraulic system storing energy in an accumulator,

A. pressurize the system to test for leaks
B. bleed off all pressure within the system
C. operate the machine until it reaches normal temperature
D. disconnect the pump pressure control switch

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为什么电子支票不是货币？

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Which of the following devices is a common basic element with nearly all mechanical governors？

A. Power piston B. Control rack C. Weights acted on by centrifugal force D. Isochronous（同步的）droop spring

Electrical supply is always needed even if only for lighting so after a ship goes into service it is extremely rare for the main bus-bars to be dead, it therefore follows that the bus-bars are continuously alive the life of the ship.

At least ___ cylinders in four--stroke engine will be configured to ensure that the engine

Before performing any maintenance on a hydraulic system storing energy in an accumulator,

为什么电子支票不是货币？

A. Power piston
B. Control rack
C. Weights acted on by centrifugal force
D. Isochronous（同步的）droop spring