What is the function of the thrust bearing?（）

[单选题]What is the function of internet to the logistics? （）A . To direct the operationB . To help the market development, operation and managementC . To guide the mobile equipment, like truck and shipD . To speed up the process

[单选题]What is the function of the after-coolers installed in the diesel engine air intake system?A．Decrease the air densityB．Increase the exhaust temperatureC．Decrease the lube oil temperatureD．Increase the air density

[单选题]What is NOT a function of the air supply of a covered lifeboat?（）A . Provides air for engine combustionB . Pressurizes water spray systemC . Provides air for passenger respirationD . Prevents smoke and other noxious fumes from entering craft

[单选题]What function is provided by the crankcase ventilation system on some diesel engines?（）A . Increases the sludge forming tendency of lube oilB . Prevents the accumulation of combustible gasesC . Improves lube oil coolingD . Improves cold weather start

[主观题]What does the following function return?char foo(void){unsigned int a = 6;iht b = -20;char c;(a+b > 6) ? (c=1): (c=0);return c;}

[单选题]What is the function of the chillers in a traditional air-conditioning syst

[单选题]The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of （） of different thickness.A . shimsB . packingC . glandsD . washer

[单选题]A thrust block is designed to（）.A . absorb the shock of wave pressure at the bowB . be placed between the engines and the foundation to absorb the vibrationC . transmit the thrust of the engine to the propellerD . transmit the thrust of the propeller

[单选题]A． thrust bearing is used with a propulsion diesel engine to ____.A．control axial movement of the crankshaftB．transmit engine thrust to the propeller shaftC．absorb vibrations in the propeller shaftingD．prevent propeller thrust from being transmitted

[单选题]A thrust bearing is used with a propulsion diesel engine to （）.A . control axial movement of the crankshaftB . transmit engine thrust to the propeller shaftC . absorb vibrations in the propeller shaftingD . prevent propeller thrust from being transmi