单选题An overspeed safety device is usually fitted to a generator engine for （） in the event of overspeed.A cutting power off the engineB increasing the fuel pump settingC braking the crankshaftD stabilizing the ship speed

____does not belong to the mooring trial item.

A.Generator sets running test

B.Shafting intensity test

C.The function test for pumps that serving for M.E

D.M.E safety devices test

An over-speed safety device is usually fitted to a generator engine for ___ in the event of over-speed.

A.stabilizing the ship speed

B.increasing the fuel pump setting

C.braking the crankshaft

D.cutting power off the engine

A.series capacitor

B.parallel reactors

C.step-up transformers

D.step-down transformers

Safety shackles are fitted with ______．

A.a threaded bolt

B.a round pin，with a cotter pin

C.a threaded bolt，locknuts，and cotter pins

D.round pins and locknuts

The major technical areas of computer security are usually represented by the initials CIA(71)，integrity，and authentication or availability．

A．confidentiality

B．confident

C．secret

D．safety

A device fitted over the discharge opening on a relief valve consisting of one or two woven wire fabrics is called a flame ______.

A.stopper

B.screen

C.filter

D.restrictor

Overspeed of the diesel engine driving an electric generator could cause ______.

A.low voltage trip

B.reverse power trip

C.damage to windings

D.excessive exhaust temperatures

An intermediate spring is ______.

A.fitted in each leg of the towing bridle

B.generally located between the “fishplate” and the main towing hawser

C.secured at the “H” bitts

D.usually made of manila hawser