Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with _______.

A．excessive speed

B．improper warm-up

C．extreme misalignment

D．inadequate lubrication

[单选题]When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for workA．remains the sameB．is reducedC．is increasedD．is eliminated

So he hired a dentist to transplant nine teeth into his jaw―having extracted the

[试题]She had an outward______(appear)，but deep down she was really worried.

[单选题]The_______in the steering gear move the rudder to the required angleA．control equipmentB．power unitC．transmission mechanismsD．fittings and pipeline

[单选题]（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.A . The driven gearB . The driveC . The greaseD . The lubricating oil

The cat lost two teeth in the fight.该句子中two teeth作什么成分?A. 宾语B. 定语C. 谓语D. 状语

[单选题]The follow-up gear on an electro-hydraulic steering gearA．relieves excessive fluid pressureB．takes the pump off stroke when the desired rudder angle is attainedC．allows for rudder movement faster than the movement of the ship&39;sD．returns the rudder

[单选题]G．ear pumps are widely used to transfer any one of the following but .A．fuel oilB．lube oilC．hydraulic oilD．fresh water

[单选题]Positive displacement, helical gear pumps are well suited for pumping oil becauseA．stuffing boxes eliminate the leakage problems usually associated with other gear pumpsB．it is not necessary to closely maintain design clearances with this pumpC．they

[单选题]B．efore engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.A．open the indicator cocksB．supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)C．p