Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.

[单选题]An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.A . manoeuvring operationsB . bad combustionC . coolingD . mooring trial

[单选题]Telecommunications stand for devices and systems that transmit electronic or optical signals across long distances. Telecommunications enables people around the world to contact one another, to access information instantly, and to communicate from re

[单选题]Which of the following is operated from the main engine room console on an automated vessel?A．Fire pump and lube oil pumpB．Lube oil pump and distilling plantC．Distilling plant and shaft alley doorD．Shaft alley door and fixed CO2 release

[单选题]The fuel injector pump is operated by （） which drives the plunger up and down.A . a separate motorB . a camC . a generatorD . a chai

[单选题]Which of the following devices is a common basic element with nearly all mechanical governors?A．Power pistonB．Control rackC．Weights acted on by centrifugal forceD．Isochronous（同步的）droop spring

[单选题]Which devices are instruments of interpretation and communication between humans and computers?A．main memoryB．input/output devicesC．CPUD．hard disk

[单选题]Which of the following devices is common to both mechanical and hydraulic governors?（）A . Direct linkage between the ball-head and fuel rackB . A servomotorC . A compensating deviceD . Flyweight

[单选题]Which of the following devices is a common basic element with nearly all mechanical governors?（）A . Power pistonB . Control rackC . Weights acted on by centrifugal forceD . Isochronous droop spring

[单选题]The injector pump is operated by a cam which drives （） up and down.A . the needle valveB . the plungerC . the pistonD . the cylinder

[单选题]safety beltA．安全带B．安全帽C．救生衣D．安全网